diff --git a/.changeset/tender-badgers-ring.md b/.changeset/tender-badgers-ring.md
new file mode 100644
index 0000000000..1115a5ab94
--- /dev/null
+++ b/.changeset/tender-badgers-ring.md
@@ -0,0 +1,5 @@
+---
+"@latticexyz/common": patch
+---
+
+`resourceToHex` will now throw if provided namespace is >14 characters. Since namespaces are used to determine access control, it's not safe to automatically truncate to fit into `bytes14` as that may change the indended namespace for resource access.
diff --git a/packages/common/src/resourceToHex.test.ts b/packages/common/src/resourceToHex.test.ts
index 77f82251dc..ceae742ebe 100644
--- a/packages/common/src/resourceToHex.test.ts
+++ b/packages/common/src/resourceToHex.test.ts
@@ -37,21 +37,16 @@ describe("resourceToHex", () => {
     `);
   });
 
-  it("truncates namespaces >14 bytes", () => {
-    const hex = resourceToHex({
-      type: "table",
-      namespace: "AVeryLongNamespace",
-      name: "name",
-    });
-    expect(hex).toMatchInlineSnapshot('"0x746241566572794c6f6e674e616d65736e616d65000000000000000000000000"');
-    expect(hexToResource(hex)).toMatchInlineSnapshot(`
-      {
-        "name": "name",
-        "namespace": "AVeryLongNames",
-        "resourceId": "0x746241566572794c6f6e674e616d65736e616d65000000000000000000000000",
-        "type": "table",
-      }
-    `);
+  it("throws for namespaces >14 bytes", () => {
+    expect(() =>
+      resourceToHex({
+        type: "table",
+        namespace: "AVeryLongNamespace",
+        name: "name",
+      }),
+    ).toThrowErrorMatchingInlineSnapshot(
+      '"Namespaces must fit into `bytes14`, but \\"AVeryLongNamespace\\" is too long."',
+    );
   });
 
   it("truncates names >16 bytes", () => {
diff --git a/packages/common/src/resourceToHex.ts b/packages/common/src/resourceToHex.ts
index 39ecd904d9..ec8153c2ad 100644
--- a/packages/common/src/resourceToHex.ts
+++ b/packages/common/src/resourceToHex.ts
@@ -15,9 +15,13 @@ export const resourceTypeIds = {
 
 export function resourceToHex(resource: Omit<Resource, "resourceId">): Hex {
   const typeId = resourceTypeIds[resource.type];
+  // Because namespaces are tied to access control, it's not safe to automatically truncate. Instead, we'll throw an error.
+  if (resource.namespace.length > 14) {
+    throw new Error(`Namespaces must fit into \`bytes14\`, but "${resource.namespace}" is too long.`);
+  }
   return concatHex([
     stringToHex(typeId, { size: 2 }),
-    stringToHex(resource.namespace.slice(0, 14), { size: 14 }),
+    stringToHex(resource.namespace, { size: 14 }),
     stringToHex(resource.name.slice(0, 16), { size: 16 }),
   ]);
 }
diff --git a/packages/store/ts/config/v2/store.test.ts b/packages/store/ts/config/v2/store.test.ts
index ade2f1809d..d41466e84d 100644
--- a/packages/store/ts/config/v2/store.test.ts
+++ b/packages/store/ts/config/v2/store.test.ts
@@ -484,7 +484,7 @@ describe("defineStore", () => {
   it("should throw if name is overridden in the store context", () => {
     attest(() =>
       defineStore({
-        namespace: "CustomNamespace",
+        namespace: "CustomNS",
         tables: {
           Example: {
             schema: { id: "address" },
@@ -500,7 +500,7 @@ describe("defineStore", () => {
   it("should throw if namespace is overridden in the store context", () => {
     attest(() =>
       defineStore({
-        namespace: "CustomNamespace",
+        namespace: "CustomNS",
         tables: {
           Example: {
             schema: { id: "address" },
diff --git a/packages/world/ts/config/v2/world.test.ts b/packages/world/ts/config/v2/world.test.ts
index ccc069c855..3cfc166464 100644
--- a/packages/world/ts/config/v2/world.test.ts
+++ b/packages/world/ts/config/v2/world.test.ts
@@ -23,7 +23,7 @@ describe("defineWorld", () => {
     const config = defineWorld({
       // @ts-expect-error TODO: remove once namespaces support ships
       namespaces: {
-        ExampleNamespace: {
+        ExampleNS: {
           tables: {
             ExampleTable: {
               schema: {
@@ -42,8 +42,8 @@ describe("defineWorld", () => {
       ...CONFIG_DEFAULTS,
       codegen: CODEGEN_DEFAULTS,
       tables: {
-        ExampleNamespace__ExampleTable: {
-          tableId: resourceToHex({ type: "table", namespace: "ExampleNamespace", name: "ExampleTable" }),
+        ExampleNS__ExampleTable: {
+          tableId: resourceToHex({ type: "table", namespace: "ExampleNS", name: "ExampleTable" }),
           schema: {
             id: {
               type: "address",
@@ -60,7 +60,7 @@ describe("defineWorld", () => {
           },
           key: ["id"],
           name: "ExampleTable",
-          namespace: "ExampleNamespace",
+          namespace: "ExampleNS",
           codegen: { ...TABLE_CODEGEN_DEFAULTS, dataStruct: true as boolean },
           type: "table",
           deploy: TABLE_DEPLOY_DEFAULTS,
@@ -79,7 +79,7 @@ describe("defineWorld", () => {
     const config = defineWorld({
       // @ts-expect-error TODO: remove once namespaces support ships
       namespaces: {
-        ExampleNamespace: {
+        ExampleNS: {
           tables: {
             ExampleTable: {
               schema: {
@@ -105,8 +105,8 @@ describe("defineWorld", () => {
       ...CONFIG_DEFAULTS,
       codegen: CODEGEN_DEFAULTS,
       tables: {
-        ExampleNamespace__ExampleTable: {
-          tableId: resourceToHex({ type: "table", namespace: "ExampleNamespace", name: "ExampleTable" }),
+        ExampleNS__ExampleTable: {
+          tableId: resourceToHex({ type: "table", namespace: "ExampleNS", name: "ExampleTable" }),
           schema: {
             id: {
               type: "address",
@@ -123,7 +123,7 @@ describe("defineWorld", () => {
           },
           key: ["id"],
           name: "ExampleTable",
-          namespace: "ExampleNamespace",
+          namespace: "ExampleNS",
           codegen: { ...TABLE_CODEGEN_DEFAULTS, dataStruct: true as boolean },
           type: "table",
           deploy: TABLE_DEPLOY_DEFAULTS,
@@ -152,7 +152,7 @@ describe("defineWorld", () => {
     const config = defineWorld({
       // @ts-expect-error TODO: remove once namespaces support ships
       namespaces: {
-        ExampleNamespace: {
+        ExampleNS: {
           tables: {
             ExampleTable: {
               schema: {
@@ -663,7 +663,7 @@ describe("defineWorld", () => {
 
   it("should use the custom name and namespace as table index", () => {
     const config = defineWorld({
-      namespace: "CustomNamespace",
+      namespace: "CustomNS",
       tables: {
         Example: {
           schema: { id: "address" },
@@ -672,13 +672,13 @@ describe("defineWorld", () => {
       },
     });
 
-    attest<"CustomNamespace__Example", keyof typeof config.tables>();
+    attest<"CustomNS__Example", keyof typeof config.tables>();
   });
 
   it("should throw if namespace is overridden in top level tables", () => {
     attest(() =>
       defineWorld({
-        namespace: "CustomNamespace",
+        namespace: "CustomNS",
         tables: {
           Example: {
             schema: { id: "address" },
diff --git a/packages/world/ts/config/v2/worldWithShorthands.test.ts b/packages/world/ts/config/v2/worldWithShorthands.test.ts
index 15078b0b8d..d901b43fc9 100644
--- a/packages/world/ts/config/v2/worldWithShorthands.test.ts
+++ b/packages/world/ts/config/v2/worldWithShorthands.test.ts
@@ -17,7 +17,7 @@ describe("defineWorldWithShorthands", () => {
   it("should resolve namespaced shorthand table config with user types and enums", () => {
     const config = defineWorldWithShorthands({
       namespaces: {
-        ExampleNamespace: {
+        ExampleNS: {
           tables: {
             ExampleTable: "Static",
           },
@@ -36,8 +36,8 @@ describe("defineWorldWithShorthands", () => {
       ...CONFIG_DEFAULTS,
       codegen: CODEGEN_DEFAULTS,
       tables: {
-        ExampleNamespace__ExampleTable: {
-          tableId: resourceToHex({ type: "table", namespace: "ExampleNamespace", name: "ExampleTable" }),
+        ExampleNS__ExampleTable: {
+          tableId: resourceToHex({ type: "table", namespace: "ExampleNS", name: "ExampleTable" }),
           schema: {
             id: {
               type: "bytes32",
@@ -50,7 +50,7 @@ describe("defineWorldWithShorthands", () => {
           },
           key: ["id"],
           name: "ExampleTable",
-          namespace: "ExampleNamespace",
+          namespace: "ExampleNS",
           codegen: { ...TABLE_CODEGEN_DEFAULTS, dataStruct: false as boolean },
           type: "table",
           deploy: TABLE_DEPLOY_DEFAULTS,
@@ -78,7 +78,7 @@ describe("defineWorldWithShorthands", () => {
   it("should resolve namespaced shorthand schema table config with user types and enums", () => {
     const config = defineWorldWithShorthands({
       namespaces: {
-        ExampleNamespace: {
+        ExampleNS: {
           tables: {
             ExampleTable: {
               id: "Static",
@@ -101,8 +101,8 @@ describe("defineWorldWithShorthands", () => {
       ...CONFIG_DEFAULTS,
       codegen: CODEGEN_DEFAULTS,
       tables: {
-        ExampleNamespace__ExampleTable: {
-          tableId: resourceToHex({ type: "table", namespace: "ExampleNamespace", name: "ExampleTable" }),
+        ExampleNS__ExampleTable: {
+          tableId: resourceToHex({ type: "table", namespace: "ExampleNS", name: "ExampleTable" }),
           schema: {
             id: {
               type: "address",
@@ -119,7 +119,7 @@ describe("defineWorldWithShorthands", () => {
           },
           key: ["id"],
           name: "ExampleTable",
-          namespace: "ExampleNamespace",
+          namespace: "ExampleNS",
           codegen: { ...TABLE_CODEGEN_DEFAULTS, dataStruct: true as boolean },
           type: "table",
           deploy: TABLE_DEPLOY_DEFAULTS,
@@ -358,7 +358,7 @@ describe("defineWorldWithShorthands", () => {
     attest(() =>
       defineWorldWithShorthands({
         namespaces: {
-          ExampleNamespace: {
+          ExampleNS: {
             tables: {
               // @ts-expect-error Type '"number"' is not assignable to type 'AbiType'.
               ExampleTable: "number",
@@ -373,7 +373,7 @@ describe("defineWorldWithShorthands", () => {
     attest(() =>
       defineWorldWithShorthands({
         namespaces: {
-          ExampleNamespace: {
+          ExampleNS: {
             // @ts-expect-error Type 'true' is not assignable to type '"`invalidProperty` is not a valid namespace config option.
             invalidProperty: true,
           },