diff --git a/.gitignore b/.gitignore
index dd85eafccd6..a97abb29039 100644
--- a/.gitignore
+++ b/.gitignore
@@ -134,6 +134,7 @@ icu4c/source/test/cintltst/Debug
 icu4c/source/test/cintltst/Makefile
 icu4c/source/test/cintltst/Release
 icu4c/source/test/cintltst/cintltst
+icu4c/source/test/collperf/Makefile
 icu4c/source/test/ieeetest/*.d
 icu4c/source/test/ieeetest/Debug
 icu4c/source/test/ieeetest/Makefile
@@ -156,6 +157,7 @@ icu4c/source/test/testmap/Debug
 icu4c/source/test/testmap/Makefile
 icu4c/source/test/testmap/Release
 icu4c/source/test/testmap/testmap
+icu4c/source/test/thaitest/Makefile
 icu4c/source/tools/*.d
 icu4c/source/tools/*.pdb
 icu4c/source/tools/*.plg
diff --git a/icu4c/source/test/collperf/.cvsignore b/icu4c/source/test/collperf/.cvsignore
new file mode 100644
index 00000000000..f3c7a7c5da6
--- /dev/null
+++ b/icu4c/source/test/collperf/.cvsignore
@@ -0,0 +1 @@
+Makefile
diff --git a/icu4c/source/test/thaitest/.cvsignore b/icu4c/source/test/thaitest/.cvsignore
new file mode 100644
index 00000000000..f3c7a7c5da6
--- /dev/null
+++ b/icu4c/source/test/thaitest/.cvsignore
@@ -0,0 +1 @@
+Makefile