diff --git a/lib/spack/spack/cmd/concretize.py b/lib/spack/spack/cmd/concretize.py
index 09486a3db8b..cbdc53907f3 100644
--- a/lib/spack/spack/cmd/concretize.py
+++ b/lib/spack/spack/cmd/concretize.py
@@ -22,6 +22,9 @@ def setup_parser(subparser):
         help="""Concretize with test dependencies. When 'root' is chosen, test
 dependencies are only added for the environment's root specs. When 'all' is
 chosen, test dependencies are enabled for all packages in the environment.""")
+    subparser.add_argument(
+        '-q', '--quiet', action='store_true',
+        help="Don't print concretized specs")
 
     spack.cmd.common.arguments.add_concretizer_args(subparser)
 
@@ -38,5 +41,6 @@ def concretize(parser, args):
 
     with env.write_transaction():
         concretized_specs = env.concretize(force=args.force, tests=tests)
-        ev.display_specs(concretized_specs)
+        if not args.quiet:
+            ev.display_specs(concretized_specs)
         env.write()
diff --git a/share/spack/spack-completion.bash b/share/spack/spack-completion.bash
index b0870551f61..cc6ca6ab563 100755
--- a/share/spack/spack-completion.bash
+++ b/share/spack/spack-completion.bash
@@ -709,7 +709,7 @@ _spack_compilers() {
 }
 
 _spack_concretize() {
-    SPACK_COMPREPLY="-h --help -f --force --test -U --fresh --reuse"
+    SPACK_COMPREPLY="-h --help -f --force --test -q --quiet -U --fresh --reuse"
 }
 
 _spack_config() {