diff --git a/icu4c/source/aclocal.m4 b/icu4c/source/aclocal.m4
index 735b8ebefdb..f95dd61c5f5 100644
--- a/icu4c/source/aclocal.m4
+++ b/icu4c/source/aclocal.m4
@@ -1,5 +1,5 @@
 dnl aclocal.m4 for ICU
-dnl Copyright (c) 1999-2004, International Business Machines Corporation and
+dnl Copyright (c) 1999-2005, International Business Machines Corporation and
 dnl others. All Rights Reserved.
 dnl Stephen F. Booth
 
diff --git a/icu4c/source/common/rbbi.cpp b/icu4c/source/common/rbbi.cpp
index ba818c3c0e9..048e3a9f42d 100644
--- a/icu4c/source/common/rbbi.cpp
+++ b/icu4c/source/common/rbbi.cpp
@@ -1,6 +1,6 @@
 /*
 ***************************************************************************
-*   Copyright (C) 1999-2004 International Business Machines Corporation   *
+*   Copyright (C) 1999-2005 International Business Machines Corporation   *
 *   and others. All rights reserved.                                      *
 ***************************************************************************
 */
diff --git a/icu4c/source/i18n/coll.cpp b/icu4c/source/i18n/coll.cpp
index a798330de63..c96e259c4ed 100644
--- a/icu4c/source/i18n/coll.cpp
+++ b/icu4c/source/i18n/coll.cpp
@@ -1,6 +1,6 @@
 /*
 ******************************************************************************
-* Copyright (C) 1996-2004, International Business Machines Corporation and   *
+* Copyright (C) 1996-2005, International Business Machines Corporation and   *
 * others. All Rights Reserved.                                               *
 ******************************************************************************
 */
diff --git a/icu4c/source/i18n/nultrans.cpp b/icu4c/source/i18n/nultrans.cpp
index efa5c87a015..820c43d07e9 100644
--- a/icu4c/source/i18n/nultrans.cpp
+++ b/icu4c/source/i18n/nultrans.cpp
@@ -1,6 +1,6 @@
 /*
 **********************************************************************
-*   Copyright (c) 2000-2003, International Business Machines
+*   Copyright (c) 2000-2005, International Business Machines
 *   Corporation and others.  All Rights Reserved.
 **********************************************************************
 *   Date        Name        Description
diff --git a/icu4c/source/i18n/nultrans.h b/icu4c/source/i18n/nultrans.h
index ce7a427df13..996a743e8e8 100644
--- a/icu4c/source/i18n/nultrans.h
+++ b/icu4c/source/i18n/nultrans.h
@@ -1,6 +1,6 @@
 /*
 **********************************************************************
-*   Copyright (c) 2000-2004, International Business Machines
+*   Copyright (c) 2000-2005, International Business Machines
 *   Corporation and others.  All Rights Reserved.
 **********************************************************************
 *   Date        Name        Description
diff --git a/icu4c/source/i18n/numfmt.cpp b/icu4c/source/i18n/numfmt.cpp
index 27d55c827e6..8a6a4c116a6 100644
--- a/icu4c/source/i18n/numfmt.cpp
+++ b/icu4c/source/i18n/numfmt.cpp
@@ -1,6 +1,6 @@
 /*
 *******************************************************************************
-* Copyright (C) 1997-2004, International Business Machines Corporation and    *
+* Copyright (C) 1997-2005, International Business Machines Corporation and    *
 * others. All Rights Reserved.                                                *
 *******************************************************************************
 *
diff --git a/icu4c/source/i18n/transreg.cpp b/icu4c/source/i18n/transreg.cpp
index 854b7fc758d..c1082e203a9 100644
--- a/icu4c/source/i18n/transreg.cpp
+++ b/icu4c/source/i18n/transreg.cpp
@@ -1,6 +1,6 @@
 /*
 **********************************************************************
-*   Copyright (c) 2001-2004, International Business Machines
+*   Copyright (c) 2001-2005, International Business Machines
 *   Corporation and others.  All Rights Reserved.
 **********************************************************************
 *   Date        Name        Description
diff --git a/icu4c/source/i18n/ucol_bld.cpp b/icu4c/source/i18n/ucol_bld.cpp
index 17834268d60..8258e5dcc3d 100644
--- a/icu4c/source/i18n/ucol_bld.cpp
+++ b/icu4c/source/i18n/ucol_bld.cpp
@@ -1,7 +1,7 @@
 /*
 *******************************************************************************
 *
-*   Copyright (C) 2001-2004, International Business Machines
+*   Copyright (C) 2001-2005, International Business Machines
 *   Corporation and others.  All Rights Reserved.
 *
 *******************************************************************************
diff --git a/icu4c/source/i18n/unicode/dcfmtsym.h b/icu4c/source/i18n/unicode/dcfmtsym.h
index 80375d704ca..95b4605e6df 100644
--- a/icu4c/source/i18n/unicode/dcfmtsym.h
+++ b/icu4c/source/i18n/unicode/dcfmtsym.h
@@ -1,6 +1,6 @@
 /*
 ********************************************************************************
-*   Copyright (C) 1997-2004, International Business Machines
+*   Copyright (C) 1997-2005, International Business Machines
 *   Corporation and others.  All Rights Reserved.
 ********************************************************************************
 *
diff --git a/icu4c/source/i18n/unicode/decimfmt.h b/icu4c/source/i18n/unicode/decimfmt.h
index b939cd04c8f..8c2d60d0c2c 100644
--- a/icu4c/source/i18n/unicode/decimfmt.h
+++ b/icu4c/source/i18n/unicode/decimfmt.h
@@ -1,6 +1,6 @@
 /*
 ********************************************************************************
-*   Copyright (C) 1997-2004, International Business Machines
+*   Copyright (C) 1997-2005, International Business Machines
 *   Corporation and others.  All Rights Reserved.
 ********************************************************************************
 *
diff --git a/icu4c/source/runConfigureICU b/icu4c/source/runConfigureICU
index 2f327f89f8e..e8637a2fb04 100755
--- a/icu4c/source/runConfigureICU
+++ b/icu4c/source/runConfigureICU
@@ -1,5 +1,5 @@
 #!/bin/sh
-# Copyright (c) 1999-2004, International Business Machines Corporation and
+# Copyright (c) 1999-2005, International Business Machines Corporation and
 # others. All Rights Reserved.
 
 # runConfigureICU: This script will run the "configure" script for the appropriate platform
diff --git a/icu4c/source/test/cintltst/ccaltst.c b/icu4c/source/test/cintltst/ccaltst.c
index 9cdc5bc9b41..fd1e14ef253 100644
--- a/icu4c/source/test/cintltst/ccaltst.c
+++ b/icu4c/source/test/cintltst/ccaltst.c
@@ -1,6 +1,6 @@
 /********************************************************************
  * COPYRIGHT: 
- * Copyright (c) 1997-2003, International Business Machines Corporation and
+ * Copyright (c) 1997-2005, International Business Machines Corporation and
  * others. All Rights Reserved.
  ********************************************************************/
 /********************************************************************************
diff --git a/icu4c/source/test/cintltst/cintltst.c b/icu4c/source/test/cintltst/cintltst.c
index 3f7de1cf818..1656e924f72 100644
--- a/icu4c/source/test/cintltst/cintltst.c
+++ b/icu4c/source/test/cintltst/cintltst.c
@@ -1,6 +1,6 @@
 /********************************************************************
  * COPYRIGHT:
- * Copyright (c) 1997-2004, International Business Machines Corporation and
+ * Copyright (c) 1997-2005, International Business Machines Corporation and
  * others. All Rights Reserved.
  ********************************************************************/
 /********************************************************************************
diff --git a/icu4c/source/test/cintltst/creststn.c b/icu4c/source/test/cintltst/creststn.c
index 993f08439a8..37496431b77 100644
--- a/icu4c/source/test/cintltst/creststn.c
+++ b/icu4c/source/test/cintltst/creststn.c
@@ -1,6 +1,6 @@
 /********************************************************************
  * COPYRIGHT: 
- * Copyright (c) 1997-2004, International Business Machines Corporation and
+ * Copyright (c) 1997-2005, International Business Machines Corporation and
  * others. All Rights Reserved.
  ********************************************************************/
 /********************************************************************************
diff --git a/icu4c/source/test/cintltst/creststn.h b/icu4c/source/test/cintltst/creststn.h
index 972f8c34168..9b3ac947cc2 100644
--- a/icu4c/source/test/cintltst/creststn.h
+++ b/icu4c/source/test/cintltst/creststn.h
@@ -1,6 +1,6 @@
 /********************************************************************
  * COPYRIGHT: 
- * Copyright (c) 1997-2004, International Business Machines Corporation and
+ * Copyright (c) 1997-2005, International Business Machines Corporation and
  * others. All Rights Reserved.
  ********************************************************************/
 /***************************************************************************
diff --git a/icu4c/source/test/iotest/Makefile.in b/icu4c/source/test/iotest/Makefile.in
index 1b0a1e652f7..e48db0f80fa 100644
--- a/icu4c/source/test/iotest/Makefile.in
+++ b/icu4c/source/test/iotest/Makefile.in
@@ -1,5 +1,5 @@
 ## Makefile.in for ICU - test/iotest
-## Copyright (c) 2002-2004, International Business Machines Corporation and
+## Copyright (c) 2002-2005, International Business Machines Corporation and
 ## others. All Rights Reserved.
 
 ## Source directory information
diff --git a/icu4c/source/test/testdata/te.txt b/icu4c/source/test/testdata/te.txt
index b1a7bf266ee..3fd08aa1a76 100644
--- a/icu4c/source/test/testdata/te.txt
+++ b/icu4c/source/test/testdata/te.txt
@@ -1,6 +1,6 @@
 //*******************************************************************************
 //*
-//*   Copyright (C) 1998-2003, International Business Machines
+//*   Copyright (C) 1998-2005, International Business Machines
 //*   Corporation and others.  All Rights Reserved.
 //*
 //*******************************************************************************
diff --git a/icu4c/source/test/testdata/te_IN.txt b/icu4c/source/test/testdata/te_IN.txt
index 6e2d8d0e64e..a71bdfb51b5 100644
--- a/icu4c/source/test/testdata/te_IN.txt
+++ b/icu4c/source/test/testdata/te_IN.txt
@@ -1,6 +1,6 @@
 //*******************************************************************************
 //*
-//*   Copyright (C) 1998-2000, International Business Machines
+//*   Copyright (C) 1998-2005, International Business Machines
 //*   Corporation and others.  All Rights Reserved.
 //*
 //*******************************************************************************
diff --git a/icu4c/source/tools/genrb/gendtjar.pl b/icu4c/source/tools/genrb/gendtjar.pl
index 088850d7d11..2a476b9996b 100755
--- a/icu4c/source/tools/genrb/gendtjar.pl
+++ b/icu4c/source/tools/genrb/gendtjar.pl
@@ -1,7 +1,7 @@
 #!/usr/bin/perl
 #  ********************************************************************
 #  * COPYRIGHT:
-#  * Copyright (c) 2002-2004, International Business Machines Corporation and
+#  * Copyright (c) 2002-2005, International Business Machines Corporation and
 #  * others. All Rights Reserved.
 #  ********************************************************************
 
diff --git a/icu4c/source/tools/genrb/wrtxml.c b/icu4c/source/tools/genrb/wrtxml.c
index 6963e684e9f..c5abaae8285 100644
--- a/icu4c/source/tools/genrb/wrtxml.c
+++ b/icu4c/source/tools/genrb/wrtxml.c
@@ -1,7 +1,7 @@
 /*
 *******************************************************************************
 *
-*   Copyright (C) 2002-2004, International Business Machines
+*   Copyright (C) 2002-2005, International Business Machines
 *   Corporation and others.  All Rights Reserved.
 *
 *******************************************************************************