diff --git a/pkg/sql/opt/norm/fold_constants.go b/pkg/sql/opt/norm/fold_constants.go
index 9d23501db126..b1b854676071 100644
--- a/pkg/sql/opt/norm/fold_constants.go
+++ b/pkg/sql/opt/norm/fold_constants.go
@@ -490,4 +490,37 @@ var FoldFunctionWhitelist = map[string]struct{}{
 	"json_array_length":            {},
 	"jsonb_array_length":           {},
 	"crdb_internal.locality_value": {},
+	"st_geomfromtext":              {},
+	"st_geometryfromtext":          {},
+	"st_geomfromewkt":              {},
+	"st_geomfromwkb":               {},
+	"st_geomfromewkb":              {},
+	"st_geomfromgeojson":           {},
+	"st_geogfromtext":              {},
+	"st_geographyfromtext":         {},
+	"st_geogfromewkt":              {},
+	"st_geogfromwkb":               {},
+	"st_geogfromewkb":              {},
+	"st_geogfromgeojson":           {},
+	"st_astext":                    {},
+	"st_asewkt":                    {},
+	"st_asbinary":                  {},
+	"st_asewkb":                    {},
+	"st_ashexwkb":                  {},
+	"st_ashexewkb":                 {},
+	"st_askml":                     {},
+	"st_asgeojson":                 {},
+	"st_area":                      {},
+	"st_length":                    {},
+	"st_perimeter":                 {},
+	"st_distance":                  {},
+	"st_covers":                    {},
+	"st_coveredby":                 {},
+	"st_contains":                  {},
+	"st_crosses":                   {},
+	"st_equals":                    {},
+	"st_intersects":                {},
+	"st_overlaps":                  {},
+	"st_touches":                   {},
+	"st_within":                    {},
 }
diff --git a/pkg/sql/opt/norm/testdata/rules/fold_constants b/pkg/sql/opt/norm/testdata/rules/fold_constants
index 469db12f2a2a..b063044eee63 100644
--- a/pkg/sql/opt/norm/testdata/rules/fold_constants
+++ b/pkg/sql/opt/norm/testdata/rules/fold_constants
@@ -804,6 +804,16 @@ values
  ├── fd: ()-->(1)
  └── (NULL,)
 
+norm expect=FoldFunction
+SELECT ST_Length(ST_GeomFromText('LINESTRING(743238 2967416,743238 2967450)', 2249));
+----
+values
+ ├── columns: st_length:1!null
+ ├── cardinality: [1 - 1]
+ ├── key: ()
+ ├── fd: ()-->(1)
+ └── (34.0,)
+
 norm expect-not=FoldFunction
 SELECT now(), current_user(), current_database()
 ----
diff --git a/pkg/sql/sem/builtins/geo_builtins.go b/pkg/sql/sem/builtins/geo_builtins.go
index f6031ec787cc..7a773c6e5b52 100644
--- a/pkg/sql/sem/builtins/geo_builtins.go
+++ b/pkg/sql/sem/builtins/geo_builtins.go
@@ -106,6 +106,7 @@ var geographyFromText = makeBuiltin(
 	},
 )
 
+// geoBuiltins must be kept in sync with sql/opt/norm/fold_constants.go.
 var geoBuiltins = map[string]builtinDefinition{
 	//
 	// Input (Geometry)