diff --git a/ext/tk/lib/tk.rb b/ext/tk/lib/tk.rb
index 7fe2fb0878..67ea8ead46 100644
--- a/ext/tk/lib/tk.rb
+++ b/ext/tk/lib/tk.rb
@@ -913,7 +913,7 @@ end
   def install_win(ppath,name=nil)
     if name
       if name == ''
-        raise ArgumentError, "invalid wiget-name '#{name}'"
+        raise ArgumentError, "invalid widget-name '#{name}'"
       end
       if name[0] == ?.
         @path = '' + name
diff --git a/ext/tk/sample/demos-en/floor.rb b/ext/tk/sample/demos-en/floor.rb
index b22ccecfd2..4b77ea6a8a 100644
--- a/ext/tk/sample/demos-en/floor.rb
+++ b/ext/tk/sample/demos-en/floor.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: false
 # floor.rb
 #
-# This demonstration script creates a canvas widet that displays the
+# This demonstration script creates a canvas widget that displays the
 # floorplan for DEC's Western Research Laboratory.
 #
 # floorDisplay widget demo (called by 'widget')
diff --git a/ext/tk/sample/demos-en/floor2.rb b/ext/tk/sample/demos-en/floor2.rb
index a95bfedbfd..518dd3b0fd 100644
--- a/ext/tk/sample/demos-en/floor2.rb
+++ b/ext/tk/sample/demos-en/floor2.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: false
 %# floor2.rb
 #
-# This demonstration script creates a canvas widet that displays the
+# This demonstration script creates a canvas widget that displays the
 # floorplan for DEC's Western Research Laboratory.
 #
 # floorDisplay widget demo (called by 'widget')
diff --git a/ext/tk/sample/demos-en/puzzle.rb b/ext/tk/sample/demos-en/puzzle.rb
index 6cf502fcf5..edefa66d73 100644
--- a/ext/tk/sample/demos-en/puzzle.rb
+++ b/ext/tk/sample/demos-en/puzzle.rb
@@ -4,7 +4,7 @@
 # This demonstration script creates a 15-puzzle game using a collection
 # of buttons.
 #
-# widet demo 'puzzle' (called by 'widget')
+# widget demo 'puzzle' (called by 'widget')
 #
 
 # toplevel widget
diff --git a/ext/tk/sample/demos-en/textpeer.rb b/ext/tk/sample/demos-en/textpeer.rb
index c3298e2caa..26f8f9f9b9 100644
--- a/ext/tk/sample/demos-en/textpeer.rb
+++ b/ext/tk/sample/demos-en/textpeer.rb
@@ -11,7 +11,7 @@ end
 
 # demo toplevel widget
 $textpeer_demo = TkToplevel.new {|w|
-  title("Text Wdget Peering Demonstration")
+  title("Text Widget Peering Demonstration")
   iconname("textpeer")
   positionWindow(w)
 }
diff --git a/ext/tk/sample/demos-jp/puzzle.rb b/ext/tk/sample/demos-jp/puzzle.rb
index 61fb4cbf60..8a0803ad3d 100644
--- a/ext/tk/sample/demos-jp/puzzle.rb
+++ b/ext/tk/sample/demos-jp/puzzle.rb
@@ -1,7 +1,7 @@
 # -*- coding: utf-8 -*-
 # frozen_string_literal: false
 #
-# widet demo 'puzzle' (called by 'widget')
+# widget demo 'puzzle' (called by 'widget')
 #
 
 # toplevel widget が存在すれば削除する
diff --git a/ext/tk/sample/demos-jp/textpeer.rb b/ext/tk/sample/demos-jp/textpeer.rb
index 31e467afef..341e6218b9 100644
--- a/ext/tk/sample/demos-jp/textpeer.rb
+++ b/ext/tk/sample/demos-jp/textpeer.rb
@@ -12,7 +12,7 @@ end
 
 # demo toplevel widget
 $textpeer_demo = TkToplevel.new {|w|
-  title("Text Wdget Peering Demonstration")
+  title("Text Widget Peering Demonstration")
   iconname("textpeer")
   positionWindow(w)
 }
diff --git a/ext/tk/sample/tkextlib/bwidget/basic.rb b/ext/tk/sample/tkextlib/bwidget/basic.rb
index 6a7bdbc1f6..11122ac941 100644
--- a/ext/tk/sample/tkextlib/bwidget/basic.rb
+++ b/ext/tk/sample/tkextlib/bwidget/basic.rb
@@ -42,7 +42,7 @@ module DemoBasic
 
   def self._entry(parent)
     ent = Tk::BWidget::Entry.new(parent, :text=>'Press enter',
-                                 :helptext=>'Entry widtet',
+                                 :helptext=>'Entry widget',
                                  :command=>proc{
                                    @@var['entcmd'] = 'command called'
                                    Tk.after(500, proc{@@var['entcmd'] = ''})