diff --git a/.vim/functions.vim b/.vim/functions.vim
index 6c56275..83313b3 100644
--- a/.vim/functions.vim
+++ b/.vim/functions.vim
@@ -9,3 +9,19 @@ function! s:unalign() range
 endfunction
 
 command! -range UnAlign <line1>,<line2>call s:unalign()
+
+function! s:guid()
+    if has('pythonx')
+        pythonx import uuid
+        let l:guid = pyxeval('str(uuid.uuid4())')
+    elseif has('windows')
+        let l:guid = system('powershell.exe -command "[guid]::NewGuid().ToString()"')
+    endif
+    if exists('l:guid')
+        execute 'normal! a' . l:guid . "\<Esc>"
+    else
+        echoerr 'No GUID provider available'
+    endif
+endfunction
+
+command! Guid call s:guid()
diff --git a/.vim/keymaps.vim b/.vim/keymaps.vim
index b7330e1..da34a77 100644
--- a/.vim/keymaps.vim
+++ b/.vim/keymaps.vim
@@ -35,6 +35,9 @@ nnoremap <C-l> <C-W>l
 nnoremap j gj
 nnoremap k gk
 
+" functions
+nnoremap <Leader>g :Guid<Cr>
+
 " fzf
 nnoremap <silent><Leader>fg :GFiles<Cr>
 nnoremap <silent><Leader>ff :Files ~<Cr>