diff --git a/eclass/ada.eclass b/eclass/ada.eclass
index 2732b4f57afd..2f68727c519b 100644
--- a/eclass/ada.eclass
+++ b/eclass/ada.eclass
@@ -57,7 +57,7 @@ _ADA_ECLASS=1
 # @DESCRIPTION:
 # All supported Ada implementations, most preferred last.
 _ADA_ALL_IMPLS=(
-	gcc_12 gcc_13 gcc_14 gcc_15
+	gcc_12 gcc_13 gcc_14 gcc_15 gcc_16
 )
 readonly _ADA_ALL_IMPLS
 
@@ -119,7 +119,7 @@ _ada_impl_supported() {
 	# keep in sync with _ADA_ALL_IMPLS!
 	# (not using that list because inline patterns shall be faster)
 	case "${impl}" in
-		gcc_12|gcc_13|gcc_14|gcc_15)
+		gcc_12|gcc_13|gcc_14|gcc_15|gcc_16)
 			return 0
 			;;
 		*)
@@ -213,7 +213,7 @@ ada_export() {
 	local impl var
 
 	case "${1}" in
-		gcc_12|gcc_13|gcc_14|gcc_15)
+		gcc_12|gcc_13|gcc_14|gcc_15|gcc_16)
 			impl=${1}
 			shift
 			;;
@@ -245,6 +245,10 @@ ada_export() {
 			gcc_pv=15
 			slot=15
 			;;
+		gcc_16)
+			gcc_pv=16
+			slot=16
+			;;
 		*)
 			gcc_pv="9.9.9"
 			slot=9.9.9
@@ -295,7 +299,7 @@ ada_export() {
 				;;
 			ADA_PKG_DEP)
 				case "${impl}" in
-					gcc_12|gcc_13|gcc_14|gcc_15)
+					gcc_12|gcc_13|gcc_14|gcc_15|gcc_16)
 						ADA_PKG_DEP="sys-devel/gcc:${slot}[ada]"
 						;;
 					*)
diff --git a/profiles/base/use.mask b/profiles/base/use.mask
index b02c40e18837..c4620e1f9dfd 100644
--- a/profiles/base/use.mask
+++ b/profiles/base/use.mask
@@ -4,6 +4,10 @@
 # This file is only for generic masks. For arch-specific masks (i.e.
 # mask everywhere, unmask on arch/*) use arch/base.
 
+# Sam James <sam@entoo.org> (2025-12-02)
+# GCC 16 is not yet released
+ada_target_gcc_16
+
 # Sam James <sam@gentoo.org> (2025-04-19)
 # Ruby 3.1 is no longer supported upstream and will no longer
 # receive security updates.
diff --git a/profiles/desc/ada_target.desc b/profiles/desc/ada_target.desc
index 315ccd216204..d85a3f2f9c9c 100644
--- a/profiles/desc/ada_target.desc
+++ b/profiles/desc/ada_target.desc
@@ -5,3 +5,4 @@ gcc_12 - Compile with sys-devel/gcc:12
 gcc_13 - Compile with sys-devel/gcc:13
 gcc_14 - Compile with sys-devel/gcc:14
 gcc_15 - Compile with sys-devel/gcc:15
+gcc_16 - Compile with sys-devel/gcc:16