diff --git a/src-tauri/Cargo.toml b/src-tauri/Cargo.toml
index efcb16e1..8e9a7826 100644
--- a/src-tauri/Cargo.toml
+++ b/src-tauri/Cargo.toml
@@ -28,6 +28,7 @@ reqwest = { version = "0.12", features = ["json", "stream"] }
 tokio = { version = "1", features = ["rt-multi-thread", "macros"] }
 futures-util = "0.3"
 base64 = "0.22"
+regex = "1"
 dirs = "5"
 
 [dev-dependencies]
diff --git a/src-tauri/src/lib.rs b/src-tauri/src/lib.rs
index 54164800..dc4b28aa 100644
--- a/src-tauri/src/lib.rs
+++ b/src-tauri/src/lib.rs
@@ -5,7 +5,7 @@ pub mod vault;
 
 use ai_chat::{AiChatRequest, AiChatResponse};
 use git::{GitCommit, ModifiedFile};
-use vault::VaultEntry;
+use vault::{VaultEntry, RenameResult};
 use frontmatter::FrontmatterValue;
 
 #[tauri::command]
@@ -63,6 +63,11 @@ fn save_image(vault_path: String, filename: String, data: String) -> Result<Stri
     vault::save_image(&vault_path, &filename, &data)
 }
 
+#[tauri::command]
+fn rename_note(vault_path: String, old_path: String, new_title: String) -> Result<RenameResult, String> {
+    vault::rename_note(&vault_path, &old_path, &new_title)
+}
+
 #[tauri::command]
 fn purge_trash(vault_path: String) -> Result<Vec<String>, String> {
     vault::purge_trash(&vault_path)
@@ -103,6 +108,7 @@ pub fn run() {
             get_note_content,
             update_frontmatter,
             delete_frontmatter_property,
+            rename_note,
             get_file_history,
             get_modified_files,
             get_file_diff,
diff --git a/src-tauri/src/vault.rs b/src-tauri/src/vault.rs
index c76245e4..50ecb9b6 100644
--- a/src-tauri/src/vault.rs
+++ b/src-tauri/src/vault.rs
@@ -1,5 +1,6 @@
 use gray_matter::engine::YAML;
 use gray_matter::Matter;
+use regex::Regex;
 use serde::{Deserialize, Serialize};
 use std::collections::HashMap;
 use std::fs;
@@ -802,6 +803,200 @@ pub fn save_image(vault_path: &str, filename: &str, data: &str) -> Result<String
     Ok(target_path.to_string_lossy().to_string())
 }
 
+/// Result of a rename operation
+#[derive(Debug, Serialize, Deserialize)]
+pub struct RenameResult {
+    /// New absolute file path after rename
+    pub new_path: String,
+    /// Number of other files updated (wiki link replacements)
+    pub updated_files: usize,
+}
+
+/// Convert a title to a filename slug (lowercase, hyphens, no special chars).
+fn title_to_slug(title: &str) -> String {
+    title
+        .to_lowercase()
+        .chars()
+        .map(|c| if c.is_ascii_alphanumeric() { c } else { '-' })
+        .collect::<String>()
+        .split('-')
+        .filter(|s| !s.is_empty())
+        .collect::<Vec<&str>>()
+        .join("-")
+}
+
+/// Update the first H1 heading in markdown content to a new title.
+fn update_h1_title(content: &str, new_title: &str) -> String {
+    let has_h1 = content.lines().any(|l| l.trim().starts_with("# "));
+    if !has_h1 {
+        return content.to_string();
+    }
+
+    let result: Vec<String> = content.lines().map(|l| {
+        if l.trim().starts_with("# ") { format!("# {}", new_title) } else { l.to_string() }
+    }).collect();
+
+    let joined = result.join("\n");
+    if content.ends_with('\n') && !joined.ends_with('\n') {
+        format!("{}\n", joined)
+    } else {
+        joined
+    }
+}
+
+/// Build a regex that matches wiki links referencing old title or path stem.
+fn build_wikilink_pattern(old_title: &str, old_path_stem: &str) -> Option<Regex> {
+    let pattern_str = format!(
+        r"\[\[(?:{}|{})(\|[^\]]*?)?\]\]",
+        regex::escape(old_title),
+        regex::escape(old_path_stem),
+    );
+    Regex::new(&pattern_str).ok()
+}
+
+/// Check if a path is a vault markdown file eligible for wikilink replacement.
+fn is_replaceable_md_file(path: &Path, exclude: &Path) -> bool {
+    path.is_file()
+        && path != exclude
+        && path.extension().is_some_and(|ext| ext == "md")
+}
+
+/// Replace wikilink references in a single file's content. Returns updated content if changed.
+fn replace_wikilinks_in_content(content: &str, re: &Regex, new_title: &str) -> Option<String> {
+    if !re.is_match(content) {
+        return None;
+    }
+    let replaced = re.replace_all(content, |caps: &regex::Captures| {
+        match caps.get(1) {
+            Some(pipe) => format!("[[{}{}]]", new_title, pipe.as_str()),
+            None => format!("[[{}]]", new_title),
+        }
+    });
+    if replaced != content { Some(replaced.into_owned()) } else { None }
+}
+
+/// Parameters for a vault-wide wikilink replacement.
+struct WikilinkReplacement<'a> {
+    vault_path: &'a Path,
+    old_title: &'a str,
+    new_title: &'a str,
+    old_path_stem: &'a str,
+    exclude_path: &'a Path,
+}
+
+/// Collect all .md file paths in vault eligible for wikilink replacement.
+fn collect_md_files(vault_path: &Path, exclude: &Path) -> Vec<std::path::PathBuf> {
+    WalkDir::new(vault_path)
+        .follow_links(true)
+        .into_iter()
+        .filter_map(|e| e.ok())
+        .map(|e| e.into_path())
+        .filter(|p| is_replaceable_md_file(p, exclude))
+        .collect()
+}
+
+/// Replace wiki link references across all vault markdown files.
+fn update_wikilinks_in_vault(params: &WikilinkReplacement) -> usize {
+    let re = match build_wikilink_pattern(params.old_title, params.old_path_stem) {
+        Some(r) => r,
+        None => return 0,
+    };
+
+    let files = collect_md_files(params.vault_path, params.exclude_path);
+    files.iter().filter(|path| {
+        let content = match fs::read_to_string(path) {
+            Ok(c) => c,
+            Err(_) => return false,
+        };
+        match replace_wikilinks_in_content(&content, &re, params.new_title) {
+            Some(new_content) => fs::write(path, &new_content).is_ok(),
+            None => false,
+        }
+    }).count()
+}
+
+/// Check if frontmatter contains a `title:` key.
+fn frontmatter_has_title_key(content: &str) -> bool {
+    if !content.starts_with("---\n") {
+        return false;
+    }
+    content[4..].split("\n---").next()
+        .map(|fm| fm.lines().any(|l| {
+            let t = l.trim_start();
+            t.starts_with("title:") || t.starts_with("\"title\":")
+        }))
+        .unwrap_or(false)
+}
+
+/// Update H1 and optionally the `title:` frontmatter field in content.
+fn update_note_title_in_content(content: &str, new_title: &str) -> String {
+    let mut updated = update_h1_title(content, new_title);
+    if frontmatter_has_title_key(content) {
+        let value = crate::frontmatter::FrontmatterValue::String(new_title.to_string());
+        if let Ok(c) = update_frontmatter_content(&updated, "title", Some(value)) {
+            updated = c;
+        }
+    }
+    updated
+}
+
+/// Strip vault prefix and .md suffix to get the relative path stem (e.g., "project/weekly-review").
+fn to_path_stem<'a>(abs_path: &'a str, vault_prefix: &str) -> &'a str {
+    abs_path
+        .strip_prefix(vault_prefix)
+        .unwrap_or(abs_path)
+        .strip_suffix(".md")
+        .unwrap_or(abs_path)
+}
+
+/// Rename a note: update its title, rename the file, and update wiki links across the vault.
+pub fn rename_note(vault_path: &str, old_path: &str, new_title: &str) -> Result<RenameResult, String> {
+    let vault = Path::new(vault_path);
+    let old_file = Path::new(old_path);
+
+    if !old_file.exists() {
+        return Err(format!("File does not exist: {}", old_path));
+    }
+    let new_title = new_title.trim();
+    if new_title.is_empty() {
+        return Err("New title cannot be empty".to_string());
+    }
+
+    let content = fs::read_to_string(old_file)
+        .map_err(|e| format!("Failed to read {}: {}", old_path, e))?;
+    let old_filename = old_file.file_name()
+        .map(|f| f.to_string_lossy().to_string()).unwrap_or_default();
+    let old_title = extract_title(&content, &old_filename);
+
+    if old_title == new_title {
+        return Ok(RenameResult { new_path: old_path.to_string(), updated_files: 0 });
+    }
+
+    // Update content (H1 + frontmatter title)
+    let updated_content = update_note_title_in_content(&content, new_title);
+
+    // Compute new path and write file
+    let parent_dir = old_file.parent().ok_or("Cannot determine parent directory")?;
+    let new_file = parent_dir.join(format!("{}.md", title_to_slug(new_title)));
+    let new_path_str = new_file.to_string_lossy().to_string();
+
+    fs::write(&new_file, &updated_content)
+        .map_err(|e| format!("Failed to write {}: {}", new_path_str, e))?;
+    if old_file != new_file {
+        fs::remove_file(old_file)
+            .map_err(|e| format!("Failed to remove old file {}: {}", old_path, e))?;
+    }
+
+    // Update wikilinks across the vault
+    let vault_prefix = format!("{}/", vault.to_string_lossy());
+    let old_path_stem = to_path_stem(old_path, &vault_prefix);
+    let updated_files = update_wikilinks_in_vault(&WikilinkReplacement {
+        vault_path: vault, old_title: &old_title, new_title, old_path_stem, exclude_path: &new_file,
+    });
+
+    Ok(RenameResult { new_path: new_path_str, updated_files })
+}
+
 #[cfg(test)]
 mod tests {
     use super::*;
@@ -1785,4 +1980,137 @@ References:
         assert_eq!(deleted.len(), 1);
         assert!(deleted[0].contains("old.md"));
     }
+
+    // --- rename_note tests ---
+
+    #[test]
+    fn test_title_to_slug() {
+        assert_eq!(title_to_slug("Weekly Review"), "weekly-review");
+        assert_eq!(title_to_slug("My  Note!  "), "my-note");
+        assert_eq!(title_to_slug("Hello World"), "hello-world");
+    }
+
+    #[test]
+    fn test_update_h1_title() {
+        let content = "---\nIs A: Note\n---\n# Old Title\n\nContent here.\n";
+        let updated = update_h1_title(content, "New Title");
+        assert!(updated.contains("# New Title"));
+        assert!(!updated.contains("# Old Title"));
+        assert!(updated.contains("Content here."));
+    }
+
+    #[test]
+    fn test_rename_note_basic() {
+        let dir = TempDir::new().unwrap();
+        let vault = dir.path();
+        create_test_file(vault, "note/weekly-review.md", "---\nIs A: Note\n---\n# Weekly Review\n\nContent here.\n");
+
+        let old_path = vault.join("note/weekly-review.md");
+        let result = rename_note(
+            vault.to_str().unwrap(),
+            old_path.to_str().unwrap(),
+            "Sprint Retrospective",
+        ).unwrap();
+
+        assert!(result.new_path.ends_with("sprint-retrospective.md"));
+        assert!(!old_path.exists());
+        assert!(Path::new(&result.new_path).exists());
+
+        let new_content = fs::read_to_string(&result.new_path).unwrap();
+        assert!(new_content.contains("# Sprint Retrospective"));
+    }
+
+    #[test]
+    fn test_rename_note_updates_wikilinks() {
+        let dir = TempDir::new().unwrap();
+        let vault = dir.path();
+        create_test_file(vault, "note/weekly-review.md", "---\nIs A: Note\n---\n# Weekly Review\n\nContent.\n");
+        create_test_file(vault, "note/other.md", "---\nIs A: Note\n---\n# Other\n\nSee [[Weekly Review]] for details.\n");
+        create_test_file(vault, "project/my-project.md", "---\nIs A: Project\nRelated to:\n  - \"[[Weekly Review]]\"\n---\n# My Project\n");
+
+        let old_path = vault.join("note/weekly-review.md");
+        let result = rename_note(
+            vault.to_str().unwrap(),
+            old_path.to_str().unwrap(),
+            "Sprint Retrospective",
+        ).unwrap();
+
+        assert_eq!(result.updated_files, 2);
+
+        let other_content = fs::read_to_string(vault.join("note/other.md")).unwrap();
+        assert!(other_content.contains("[[Sprint Retrospective]]"));
+        assert!(!other_content.contains("[[Weekly Review]]"));
+
+        let project_content = fs::read_to_string(vault.join("project/my-project.md")).unwrap();
+        assert!(project_content.contains("[[Sprint Retrospective]]"));
+    }
+
+    #[test]
+    fn test_rename_note_same_title_noop() {
+        let dir = TempDir::new().unwrap();
+        let vault = dir.path();
+        create_test_file(vault, "note/my-note.md", "# My Note\n\nContent.\n");
+
+        let old_path = vault.join("note/my-note.md");
+        let result = rename_note(
+            vault.to_str().unwrap(),
+            old_path.to_str().unwrap(),
+            "My Note",
+        ).unwrap();
+
+        assert_eq!(result.new_path, old_path.to_str().unwrap());
+        assert_eq!(result.updated_files, 0);
+    }
+
+    #[test]
+    fn test_rename_note_empty_title_error() {
+        let dir = TempDir::new().unwrap();
+        let vault = dir.path();
+        create_test_file(vault, "note/test.md", "# Test\n");
+
+        let old_path = vault.join("note/test.md");
+        let result = rename_note(
+            vault.to_str().unwrap(),
+            old_path.to_str().unwrap(),
+            "  ",
+        );
+        assert!(result.is_err());
+    }
+
+    #[test]
+    fn test_rename_note_preserves_pipe_alias_in_wikilinks() {
+        let dir = TempDir::new().unwrap();
+        let vault = dir.path();
+        create_test_file(vault, "note/weekly-review.md", "# Weekly Review\n");
+        create_test_file(vault, "note/ref.md", "# Ref\n\nSee [[Weekly Review|my review]] for info.\n");
+
+        let old_path = vault.join("note/weekly-review.md");
+        let result = rename_note(
+            vault.to_str().unwrap(),
+            old_path.to_str().unwrap(),
+            "Sprint Retro",
+        ).unwrap();
+
+        assert_eq!(result.updated_files, 1);
+        let ref_content = fs::read_to_string(vault.join("note/ref.md")).unwrap();
+        assert!(ref_content.contains("[[Sprint Retro|my review]]"));
+    }
+
+    #[test]
+    fn test_rename_note_updates_title_frontmatter() {
+        let dir = TempDir::new().unwrap();
+        let vault = dir.path();
+        create_test_file(vault, "note/old.md", "---\ntitle: Old Name\nIs A: Note\n---\n# Old Name\n");
+
+        let old_path = vault.join("note/old.md");
+        let result = rename_note(
+            vault.to_str().unwrap(),
+            old_path.to_str().unwrap(),
+            "New Name",
+        ).unwrap();
+
+        let content = fs::read_to_string(&result.new_path).unwrap();
+        assert!(content.contains("title: New Name"));
+        assert!(content.contains("# New Name"));
+    }
 }