diff --git a/.gitignore b/.gitignore
index 6f6bf59f905..976cac6b7d7 100644
--- a/.gitignore
+++ b/.gitignore
@@ -482,22 +482,6 @@ icu4c/source/tools/genbrk/genbrk.vcproj.*.*.user
 icu4c/source/tools/genbrk/release
 icu4c/source/tools/genbrk/x64
 icu4c/source/tools/genbrk/x86
-icu4c/source/tools/gencase/*.d
-icu4c/source/tools/gencase/*.ncb
-icu4c/source/tools/gencase/*.o
-icu4c/source/tools/gencase/*.opt
-icu4c/source/tools/gencase/*.pdb
-icu4c/source/tools/gencase/*.plg
-icu4c/source/tools/gencase/Debug
-icu4c/source/tools/gencase/Makefile
-icu4c/source/tools/gencase/Release
-icu4c/source/tools/gencase/debug
-icu4c/source/tools/gencase/gencase
-icu4c/source/tools/gencase/gencase.[0-9]
-icu4c/source/tools/gencase/gencase.vcproj.*.*.user
-icu4c/source/tools/gencase/release
-icu4c/source/tools/gencase/x64
-icu4c/source/tools/gencase/x86
 icu4c/source/tools/genccode/*.d
 icu4c/source/tools/genccode/*.o
 icu4c/source/tools/genccode/*.pdb
@@ -881,4 +865,20 @@ tools/unicode/c/genbidi/genbidi.vcproj.*.*.user
 tools/unicode/c/genbidi/release
 tools/unicode/c/genbidi/x64
 tools/unicode/c/genbidi/x86
+tools/unicode/c/gencase/*.d
+tools/unicode/c/gencase/*.ncb
+tools/unicode/c/gencase/*.o
+tools/unicode/c/gencase/*.opt
+tools/unicode/c/gencase/*.pdb
+tools/unicode/c/gencase/*.plg
+tools/unicode/c/gencase/Debug
+tools/unicode/c/gencase/Makefile
+tools/unicode/c/gencase/Release
+tools/unicode/c/gencase/debug
+tools/unicode/c/gencase/gencase
+tools/unicode/c/gencase/gencase.[0-9]
+tools/unicode/c/gencase/gencase.vcproj.*.*.user
+tools/unicode/c/gencase/release
+tools/unicode/c/gencase/x64
+tools/unicode/c/gencase/x86
 tools/unicodetools/com/ibm/rbm/lib
diff --git a/icu4c/source/tools/gencase/Makefile.in b/tools/unicode/c/gencase/Makefile.in
similarity index 100%
rename from icu4c/source/tools/gencase/Makefile.in
rename to tools/unicode/c/gencase/Makefile.in
diff --git a/icu4c/source/tools/gencase/gencase.c b/tools/unicode/c/gencase/gencase.c
similarity index 100%
rename from icu4c/source/tools/gencase/gencase.c
rename to tools/unicode/c/gencase/gencase.c
diff --git a/icu4c/source/tools/gencase/gencase.h b/tools/unicode/c/gencase/gencase.h
similarity index 100%
rename from icu4c/source/tools/gencase/gencase.h
rename to tools/unicode/c/gencase/gencase.h
diff --git a/icu4c/source/tools/gencase/gencase.vcproj b/tools/unicode/c/gencase/gencase.vcproj
similarity index 100%
rename from icu4c/source/tools/gencase/gencase.vcproj
rename to tools/unicode/c/gencase/gencase.vcproj
diff --git a/icu4c/source/tools/gencase/store.c b/tools/unicode/c/gencase/store.c
similarity index 100%
rename from icu4c/source/tools/gencase/store.c
rename to tools/unicode/c/gencase/store.c