diff --git a/docs/reference-guides/theme-json-reference/theme-json-living.md b/docs/reference-guides/theme-json-reference/theme-json-living.md
index 6d0c02e8d27ed..ac229ecc3c6cf 100644
--- a/docs/reference-guides/theme-json-reference/theme-json-living.md
+++ b/docs/reference-guides/theme-json-reference/theme-json-living.md
@@ -101,7 +101,7 @@ Settings related to typography.
 | textTransform | boolean | true |  |
 | dropCap | boolean | true |  |
 | fontSizes | array |  | name, size, slug |
-| fontFamilies | array |  | fontFamily, name, slug |
+| fontFamilies | array |  | fontFace, fontFamily, name, slug |
 
 ---
 
diff --git a/schemas/json/theme.json b/schemas/json/theme.json
index 75e346e0982f5..bb9de11330d40 100644
--- a/schemas/json/theme.json
+++ b/schemas/json/theme.json
@@ -317,6 +317,102 @@
 									"fontFamily": {
 										"description": "CSS font-family value.",
 										"type": "string"
+									},
+									"fontFace": {
+										"description": "Array of font-face declarations.",
+										"type": "array",
+										"items": {
+											"type": "object",
+											"properties": {
+												"fontFamily": {
+													"description": "CSS font-family value.",
+													"type": "string",
+													"default": ""
+												},
+												"fontStyle": {
+													"description": "CSS font-style value.",
+													"type": "string",
+													"default": "normal"
+												},
+												"fontWeight": {
+													"description": "List of available font weights, separated by a space.",
+													"type": "string",
+													"default": "400",
+													"oneOf": [
+														{
+															"type": "string"
+														},
+														{
+															"type": "integer"
+														}
+													]
+												},
+												"fontDisplay": {
+													"description": "CSS font-display value.",
+													"type": "string",
+													"default": "fallback",
+													"enum": [
+														"auto",
+														"block",
+														"fallback",
+														"swap"
+													]
+												},
+												"src": {
+													"description": "Paths or URLs to the font files.",
+													"oneOf": [
+														{
+															"type": "string"
+														},
+														{
+															"type": "array",
+															"items": {
+																"type": "string"
+															}
+														}
+													],
+													"default": []
+												},
+												"fontStretch": {
+													"description": "CSS font-stretch value.",
+													"type": "string"
+												},
+												"ascendOverride": {
+													"description": "CSS ascend-override value.",
+													"type": "string"
+												},
+												"descendOverride": {
+													"description": "CSS descend-override value.",
+													"type": "string"
+												},
+												"fontVariant": {
+													"description": "CSS font-variant value.",
+													"type": "string"
+												},
+												"fontFeatureSettings": {
+													"description": "CSS font-feature-settings value.",
+													"type": "string"
+												},
+												"fontVariationSettings": {
+													"description": "CSS font-variation-settings value.",
+													"type": "string"
+												},
+												"lineGapOverride": {
+													"description": "CSS line-gap-override value.",
+													"type": "string"
+												},
+												"sizeAdjust": {
+													"description": "CSS size-adjust value.",
+													"type": "string"
+												},
+												"unicodeRange": {
+													"description": "CSS unicode-range value.",
+													"type": "string"
+												}
+											},
+											"required": [ "fontFamily", "src" ],
+											"additionalProperties": false
+										}
 									}
 								},
 								"additionalProperties": false