diff --git a/mercurial/bundle2.py b/mercurial/bundle2.py
--- a/mercurial/bundle2.py
+++ b/mercurial/bundle2.py
@@ -2419,7 +2419,7 @@
             op.records.add(b'bookmarks', record)
     else:
         raise error.ProgrammingError(
-            b'unkown bookmark mode: %s' % bookmarksmode
+            b'unknown bookmark mode: %s' % bookmarksmode
         )
 
 
diff --git a/mercurial/merge.py b/mercurial/merge.py
--- a/mercurial/merge.py
+++ b/mercurial/merge.py
@@ -2479,13 +2479,13 @@
 
         if confirm:
             nb_ignored = len(status.ignored)
-            nb_unkown = len(status.unknown)
-            if nb_unkown and nb_ignored:
-                msg = _(b"permanently delete %d unkown and %d ignored files?")
-                msg %= (nb_unkown, nb_ignored)
-            elif nb_unkown:
-                msg = _(b"permanently delete %d unkown files?")
-                msg %= nb_unkown
+            nb_unknown = len(status.unknown)
+            if nb_unknown and nb_ignored:
+                msg = _(b"permanently delete %d unknown and %d ignored files?")
+                msg %= (nb_unknown, nb_ignored)
+            elif nb_unknown:
+                msg = _(b"permanently delete %d unknown files?")
+                msg %= nb_unknown
             elif nb_ignored:
                 msg = _(b"permanently delete %d ignored files?")
                 msg %= nb_ignored
diff --git a/mercurial/obsutil.py b/mercurial/obsutil.py
--- a/mercurial/obsutil.py
+++ b/mercurial/obsutil.py
@@ -218,7 +218,7 @@
 
         or
 
-        # (A0 rewritten as AX; AX rewritten as A1; AX is unkown locally)
+        # (A0 rewritten as AX; AX rewritten as A1; AX is unknown locally)
         #
         # <-1- A0 <-2- AX <-3- A1 # Marker "2,3" are exclusive to A1
 
diff --git a/setup.py b/setup.py
--- a/setup.py
+++ b/setup.py
@@ -535,7 +535,7 @@
             # (see mercurial/__modulepolicy__.py)
             if hgrustext != 'cpython' and hgrustext is not None:
                 if hgrustext:
-                    msg = 'unkown HGWITHRUSTEXT value: %s' % hgrustext
+                    msg = 'unknown HGWITHRUSTEXT value: %s' % hgrustext
                     printf(msg, file=sys.stderr)
                 hgrustext = None
             self.rust = hgrustext is not None
diff --git a/tests/test-purge.t b/tests/test-purge.t
--- a/tests/test-purge.t
+++ b/tests/test-purge.t
@@ -29,7 +29,7 @@
   $ hg st
   $ touch foo
   $ hg purge
-  permanently delete 1 unkown files? (yN) n
+  permanently delete 1 unknown files? (yN) n
   abort: removal cancelled
   [250]
   $ hg st
@@ -93,7 +93,7 @@
   untracked_file
   untracked_file_readonly
   $ hg purge --confirm
-  permanently delete 2 unkown files? (yN) n
+  permanently delete 2 unknown files? (yN) n
   abort: removal cancelled
   [250]
   $ hg purge -v
@@ -156,7 +156,7 @@
   $ hg purge -p ../untracked_directory
   untracked_directory/nested_directory
   $ hg purge --confirm
-  permanently delete 1 unkown files? (yN) n
+  permanently delete 1 unknown files? (yN) n
   abort: removal cancelled
   [250]
   $ hg purge -v ../untracked_directory
@@ -203,7 +203,7 @@
   ignored
   untracked_file
   $ hg purge --confirm --all
-  permanently delete 1 unkown and 1 ignored files? (yN) n
+  permanently delete 1 unknown and 1 ignored files? (yN) n
   abort: removal cancelled
   [250]
   $ hg purge -v --all