diff --git a/runtime/tutor/tutor.tutor b/runtime/tutor/tutor.tutor
index c937bd686a..b46fcc4836 100644
--- a/runtime/tutor/tutor.tutor
+++ b/runtime/tutor/tutor.tutor
@@ -118,7 +118,7 @@ and are hidden by default. Links to them look like
 
     \[label\]\(\*anchor\*\)
 
-6. Add the appropiate link:
+6. Add the appropriate link:
 
 A link to the Links section
 A link to the [Links](*links*) section
diff --git a/scripts/lua2dox.lua b/scripts/lua2dox.lua
index 438f734917..171621e38d 100644
--- a/scripts/lua2dox.lua
+++ b/scripts/lua2dox.lua
@@ -65,7 +65,7 @@ FILTER_PATTERNS = *.lua=lua2dox_filter
 
 Either add them to the end or find the appropriate entry in Doxyfile.
 
-There are other lines that you might like to alter, but see futher documentation for details.
+There are other lines that you might like to alter, but see further documentation for details.
 
 <li> When Doxyfile is edited run "doxygen"
 
diff --git a/src/nvim/lua/converter.c b/src/nvim/lua/converter.c
index 44fe60e9c8..09d1a68898 100644
--- a/src/nvim/lua/converter.c
+++ b/src/nvim/lua/converter.c
@@ -1225,7 +1225,7 @@ GENERATE_INDEX_FUNCTION(Tabpage)
 
 #undef GENERATE_INDEX_FUNCTION
 
-/// Record some auxilary values in vim module
+/// Record some auxiliary values in vim module
 ///
 /// Assumes that module table is on top of the stack.
 ///
diff --git a/src/nvim/mark_extended.c b/src/nvim/mark_extended.c
index 91c2f919ce..17776d438a 100644
--- a/src/nvim/mark_extended.c
+++ b/src/nvim/mark_extended.c
@@ -4,7 +4,7 @@
 // Implements extended marks for plugins. Each mark exists in a btree of
 // lines containing btrees of columns.
 //
-// The btree provides efficent range lookups.
+// The btree provides efficient range lookups.
 // A map of pointers to the marks is used for fast lookup by mark id.
 //
 // Marks are moved by calls to: extmark_col_adjust, extmark_adjust, or
@@ -300,7 +300,7 @@ Extmark *extmark_from_pos(buf_T *buf, uint64_t ns, linenr_T lnum, colnr_T col)
   return NULL;
 }
 
-// Returns an avaliable id in a namespace
+// Returns an available id in a namespace
 uint64_t extmark_free_id_get(buf_T *buf, uint64_t ns)
 {
   if (!buf->b_extmark_ns) {
diff --git a/src/nvim/os_unix.c b/src/nvim/os_unix.c
index ded575529f..0f44df2188 100644
--- a/src/nvim/os_unix.c
+++ b/src/nvim/os_unix.c
@@ -412,7 +412,7 @@ int mch_expand_wildcards(int num_pat, char_u **pat, int *num_file,
   fseek(fd, 0L, SEEK_SET);
   buffer = xmalloc(len + 1);
   // fread() doesn't terminate buffer with NUL;
-  // appropiate termination (not always NUL) is done below.
+  // appropriate termination (not always NUL) is done below.
   size_t readlen = fread((char *)buffer, 1, len, fd);
   fclose(fd);
   os_remove((char *)tempname);
diff --git a/src/nvim/screen.c b/src/nvim/screen.c
index 7b9601a5a6..e9be7eed38 100644
--- a/src/nvim/screen.c
+++ b/src/nvim/screen.c
@@ -124,7 +124,7 @@
 
 
 // temporary buffer for rendering a single screenline, so it can be
-// comparared with previous contents to calulate smallest delta.
+// comparared with previous contents to calculate smallest delta.
 static size_t linebuf_size = 0;
 static schar_T *linebuf_char = NULL;
 static sattr_T *linebuf_attr = NULL;
diff --git a/src/nvim/syntax.c b/src/nvim/syntax.c
index bdbc09a87a..61ee225eba 100644
--- a/src/nvim/syntax.c
+++ b/src/nvim/syntax.c
@@ -7316,7 +7316,7 @@ static void set_hl_attr(int idx)
 
   sgp->sg_attr = hl_get_syn_attr(idx+1, at_en);
 
-  // a cursor style uses this syn_id, make sure its atribute is updated.
+  // a cursor style uses this syn_id, make sure its attribute is updated.
   if (cursor_mode_uses_syn_id(idx+1)) {
     ui_mode_info_set();
   }
diff --git a/src/nvim/testdir/test_search.vim b/src/nvim/testdir/test_search.vim
index 5d4c2a015f..68eb311e3c 100644
--- a/src/nvim/testdir/test_search.vim
+++ b/src/nvim/testdir/test_search.vim
@@ -57,7 +57,7 @@ func Test_search_cmdline()
   call feedkeys("/the".repeat("\<C-G>", 6)."\<cr>", 'tx')
   call assert_equal('  8 them', getline('.'))
   :1
-  " eigth match
+  " eighth match
   call feedkeys("/the".repeat("\<C-G>", 7)."\<cr>", 'tx')
   call assert_equal('  9 these', getline('.'))
   :1
@@ -99,7 +99,7 @@ func Test_search_cmdline()
   call feedkeys("/the".repeat("\<C-G>", 6)."\<cr>", 'tx')
   call assert_equal('  8 them', getline('.'))
   :1
-  " eigth match
+  " eighth match
   call feedkeys("/the".repeat("\<C-G>", 7)."\<cr>", 'tx')
   call assert_equal('  9 these', getline('.'))
   :1
diff --git a/src/nvim/ui_compositor.c b/src/nvim/ui_compositor.c
index 7d3ecfa0b8..e582d8f859 100644
--- a/src/nvim/ui_compositor.c
+++ b/src/nvim/ui_compositor.c
@@ -626,7 +626,7 @@ static void ui_comp_grid_scroll(UI *ui, Integer grid, Integer top,
   if (covered || curgrid->blending) {
     // TODO(bfredl):
     // 1. check if rectangles actually overlap
-    // 2. calulate subareas that can scroll.
+    // 2. calculate subareas that can scroll.
     compose_debug(top, bot, left, right, dbghl_recompose, true);
     for (int r = (int)(top + MAX(-rows, 0)); r < bot - MAX(rows, 0); r++) {
       // TODO(bfredl): workaround for win_update() performing two scrolls in a
diff --git a/test/functional/api/mark_extended_spec.lua b/test/functional/api/mark_extended_spec.lua
index edb0f8ac2b..bf910568b1 100644
--- a/test/functional/api/mark_extended_spec.lua
+++ b/test/functional/api/mark_extended_spec.lua
@@ -507,7 +507,7 @@ describe('API/extmarks', function()
     feed('0l3dl<esc>')
     check_undo_redo(ns, marks[1], 0, 2, 0, 1)
     check_undo_redo(ns, marks[2], 0, 3, 0, 1)
-    -- delete 1, nothing should happend to our marks
+    -- delete 1, nothing should happen to our marks
     feed('u')
     feed('$x')
     check_undo_redo(ns, marks[2], 0, 3, 0, 3)
@@ -543,7 +543,7 @@ describe('API/extmarks', function()
     check_undo_redo(ns, marks[1], 0, 1, 0, 0)
     check_undo_redo(ns, marks[2], 0, 3, 0, 0)
     check_undo_redo(ns, marks[3], 1, 2, 1, 0)
-    -- delete 1, nothing should happend to our marks
+    -- delete 1, nothing should happen to our marks
     feed('u')
     feed('$<c-v>jx')
     check_undo_redo(ns, marks[2], 0, 3, 0, 3)
diff --git a/test/functional/autocmd/cmdline_spec.lua b/test/functional/autocmd/cmdline_spec.lua
index 51b7b819e9..8ec06dc148 100644
--- a/test/functional/autocmd/cmdline_spec.lua
+++ b/test/functional/autocmd/cmdline_spec.lua
@@ -33,7 +33,7 @@ describe('cmdline autocommands', function()
     eq({'notification', 'CmdlineEnter', {{cmdtype=':', cmdlevel=1}}}, next_msg())
 
     -- note: feed('bork<c-c>') might not consume 'bork'
-    -- due to out-of-band interupt handling
+    -- due to out-of-band interrupt handling
     feed('bork<esc>')
     eq({'notification', 'CmdlineLeave',
         {{cmdtype=':', cmdlevel=1, abort=true}}}, next_msg())
diff --git a/test/functional/cmdline/history_spec.lua b/test/functional/cmdline/history_spec.lua
index 20f9cf06a2..ee2d36f642 100644
--- a/test/functional/cmdline/history_spec.lua
+++ b/test/functional/cmdline/history_spec.lua
@@ -6,7 +6,7 @@ describe('history support code', function()
   before_each(clear)
 
   it('correctly clears start of the history', function()
-    -- Regression test: check absense of the memory leak when clearing start of
+    -- Regression test: check absence of the memory leak when clearing start of
     -- the history using ex_getln.c/clr_history().
     eq(1, funcs.histadd(':', 'foo'))
     eq(1, funcs.histdel(':'))
@@ -14,7 +14,7 @@ describe('history support code', function()
   end)
 
   it('correctly clears end of the history', function()
-    -- Regression test: check absense of the memory leak when clearing end of
+    -- Regression test: check absence of the memory leak when clearing end of
     -- the history using ex_getln.c/clr_history().
     meths.set_option('history', 1)
     eq(1, funcs.histadd(':', 'foo'))
diff --git a/test/functional/ui/cmdline_spec.lua b/test/functional/ui/cmdline_spec.lua
index c2354103c2..21c01b3458 100644
--- a/test/functional/ui/cmdline_spec.lua
+++ b/test/functional/ui/cmdline_spec.lua
@@ -775,7 +775,7 @@ local function test_cmdline(linegrid)
     }}}
 
     -- This used to send an invalid event where pos where larger than the total
-    -- lenght of content. Checked in _handle_cmdline_show.
+    -- length of content. Checked in _handle_cmdline_show.
     feed('<esc>')
     screen:expect([[
       ^                         |
diff --git a/test/functional/ui/searchhl_spec.lua b/test/functional/ui/searchhl_spec.lua
index 486de02a09..635ce7392b 100644
--- a/test/functional/ui/searchhl_spec.lua
+++ b/test/functional/ui/searchhl_spec.lua
@@ -442,7 +442,7 @@ describe('search highlighting', function()
     feed_command("call matchadd('MyGroup', 'special')")
     feed_command("call matchadd('MyGroup2', 'text', 0)")
 
-    -- searchhl and matchadd matches are exclusive, only the higest priority
+    -- searchhl and matchadd matches are exclusive, only the highest priority
     -- is used (and matches with lower priorities are not combined)
     feed_command("/ial te")
     screen:expect([[
diff --git a/test/unit/os/env_spec.lua b/test/unit/os/env_spec.lua
index c543551607..e24a389d69 100644
--- a/test/unit/os/env_spec.lua
+++ b/test/unit/os/env_spec.lua
@@ -121,7 +121,7 @@ describe('env.c', function()
       local name = 'NVIM_UNIT_TEST_GETENV_1N'
       local value = 'NVIM_UNIT_TEST_GETENV_1V'
       eq(NULL, os_getenv(name))
-      -- Use os_setenv because Lua dosen't have setenv.
+      -- Use os_setenv because Lua doesn't have setenv.
       os_setenv(name, value, 1)
       eq(value, os_getenv(name))