diff --git a/icu4c/source/common/ucurr.cpp b/icu4c/source/common/ucurr.cpp
index a70c11a1e80..dbad1e50147 100644
--- a/icu4c/source/common/ucurr.cpp
+++ b/icu4c/source/common/ucurr.cpp
@@ -2003,6 +2003,7 @@ static const struct CurrencyList {
     {"XBC", UCURR_UNCOMMON|UCURR_NON_DEPRECATED},
     {"XBD", UCURR_UNCOMMON|UCURR_NON_DEPRECATED},
     {"XCD", UCURR_COMMON|UCURR_NON_DEPRECATED},
+    {"XCG", UCURR_COMMON|UCURR_NON_DEPRECATED},
     {"XDR", UCURR_UNCOMMON|UCURR_NON_DEPRECATED},
     {"XEU", UCURR_UNCOMMON|UCURR_DEPRECATED},
     {"XFO", UCURR_UNCOMMON|UCURR_NON_DEPRECATED},
diff --git a/icu4c/source/test/cintltst/currtest.c b/icu4c/source/test/cintltst/currtest.c
index 80ad66f0baf..e75c1743e58 100644
--- a/icu4c/source/test/cintltst/currtest.c
+++ b/icu4c/source/test/cintltst/currtest.c
@@ -113,6 +113,9 @@ static void TestEnumList(void) {
     expectInList("VED", UCURR_NON_DEPRECATED, true);
 
     expectInList("EQE", UCURR_ALL, false);
+
+    // CLDR 45 and ICU-22726
+    expectInList("XCG", UCURR_ALL, true);
 }
 
 static void TestEnumListReset(void) {
diff --git a/icu4c/source/test/testdata/structLocale.txt b/icu4c/source/test/testdata/structLocale.txt
index 0f14f8bf6e4..e808de227c0 100644
--- a/icu4c/source/test/testdata/structLocale.txt
+++ b/icu4c/source/test/testdata/structLocale.txt
@@ -1437,6 +1437,10 @@ structLocale:table(nofallback){
             "",
             "",
         }
+        XCG{
+            "",
+            "",
+        }
         XDR{
             "",
             "",
@@ -3843,6 +3847,14 @@ structLocale:table(nofallback){
             many{""}
             other{""}
         }
+        XCG{
+            zero{""}
+            one{""}
+            two{""}
+            few{""}
+            many{""}
+            other{""}
+        }
         XDR{
             zero{""}
             one{""}