diff --git a/fre/catalog/frecatalog.py b/fre/catalog/frecatalog.py
index 9f43fbb4..58149e5e 100644
--- a/fre/catalog/frecatalog.py
+++ b/fre/catalog/frecatalog.py
@@ -6,6 +6,7 @@
 #import catalogbuilder
 from catalogbuilder.scripts import gen_intake_gfdl
 from catalogbuilder.scripts import test_catalog
+from catalogbuilder.scripts import combine_cats
 
 
 @click.group(help=click.style(" - access fre catalog subcommands", fg=(64,94,213)))
@@ -47,5 +48,15 @@ def validate(context, json_path, json_template_path, test_failure):
     """ - Validate a catalog against catalog schema """
     context.forward(test_catalog.main)
 
+@catalog_cli.command()
+@click.option('--input', required = True, multiple = True,
+              help = 'Catalog json files to be merged, space-separated')
+@click.option('--output', required = True, nargs = 1,
+              help = 'Merged catalog')
+@click.pass_context
+def merge(context, input, output):
+    """ - Merge two or more more catalogs into one """
+    context.invoke(combine_cats.combine_cats, inputfiles=input, output_path=output)
+
 if __name__ == "__main__":
     catalog_cli()
diff --git a/fre/tests/test_fre_catalog_cli.py b/fre/tests/test_fre_catalog_cli.py
index ce9c764a..79a1d35a 100644
--- a/fre/tests/test_fre_catalog_cli.py
+++ b/fre/tests/test_fre_catalog_cli.py
@@ -36,3 +36,15 @@ def test_cli_fre_catalog_builder_help():
     ''' fre catalog builder --help '''
     result = runner.invoke(fre.fre, args=["catalog", "builder", "--help"])
     assert result.exit_code == 0
+
+def test_cli_fre_catalog_merge():
+    result = runner.invoke(fre.fre, args=["catalog", "merge"])
+    expected_stdout = "Error: Missing option '--input'."
+    assert all( [
+        result.exit_code == 2,
+        expected_stdout in result.stdout.split('\n')
+    ] )
+
+def test_cli_fre_catalog_merge_help():
+    result = runner.invoke(fre.fre, args=["catalog", "merge", "--help"])
+    assert result.exit_code == 0