diff --git a/lib/rules/template-no-at-ember-render-modifiers.js b/lib/rules/template-no-at-ember-render-modifiers.js
index 5bcd2570e1..fa93b2c776 100644
--- a/lib/rules/template-no-at-ember-render-modifiers.js
+++ b/lib/rules/template-no-at-ember-render-modifiers.js
@@ -1,3 +1,20 @@
+// Sub-path → canonical kebab-case modifier name (default import).
+const RENDER_MODIFIER_IMPORT_PATHS = {
+  '@ember/render-modifiers/modifiers/did-insert': 'did-insert',
+  '@ember/render-modifiers/modifiers/did-update': 'did-update',
+  '@ember/render-modifiers/modifiers/will-destroy': 'will-destroy',
+};
+
+// Named exports of the root package `@ember/render-modifiers` → canonical kebab name.
+const ROOT_NAMED_EXPORTS = {
+  didInsert: 'did-insert',
+  didUpdate: 'did-update',
+  willDestroy: 'will-destroy',
+};
+
+const KEBAB_NAMES = new Set(['did-insert', 'did-update', 'will-destroy']);
+const ROOT_PACKAGE = '@ember/render-modifiers';
+
 /** @type {import('eslint').Rule.RuleModule} */
 module.exports = {
   meta: {
@@ -23,24 +40,72 @@ module.exports = {
   },
 
   create(context) {
+    const filename = context.filename;
+    const isStrictMode = filename.endsWith('.gjs') || filename.endsWith('.gts');
+
+    // local import name → canonical kebab name. Only populated in GJS/GTS.
+    const importedModifiers = new Map();
+
+    function isRenderModifier(name) {
+      if (isStrictMode) {
+        return importedModifiers.has(name);
+      }
+      // HBS: resolver-resolved by canonical kebab name
+      return KEBAB_NAMES.has(name);
+    }
+
+    function canonicalName(name) {
+      return importedModifiers.get(name) || name;
+    }
+
     return {
+      ImportDeclaration(node) {
+        if (!isStrictMode) {
+          return;
+        }
+        const source = node.source.value;
+
+        if (source === ROOT_PACKAGE) {
+          // `import { didInsert, didUpdate as x } from '@ember/render-modifiers'`
+          for (const specifier of node.specifiers) {
+            if (specifier.type === 'ImportSpecifier') {
+              const exportedName = specifier.imported.name;
+              const canonical = ROOT_NAMED_EXPORTS[exportedName];
+              if (canonical) {
+                importedModifiers.set(specifier.local.name, canonical);
+              }
+            }
+          }
+          return;
+        }
+
+        // Sub-path: `import didInsert from '@ember/render-modifiers/modifiers/did-insert'`
+        const canonical = RENDER_MODIFIER_IMPORT_PATHS[source];
+        if (!canonical) {
+          return;
+        }
+        for (const specifier of node.specifiers) {
+          if (specifier.type === 'ImportDefaultSpecifier') {
+            importedModifiers.set(specifier.local.name, canonical);
+          }
+        }
+      },
+
       GlimmerElementNode(node) {
         if (!node.modifiers) {
           return;
         }
 
         for (const modifier of node.modifiers) {
-          if (
-            modifier.path &&
-            modifier.path.type === 'GlimmerPathExpression' &&
-            (modifier.path.original === 'did-insert' ||
-              modifier.path.original === 'did-update' ||
-              modifier.path.original === 'will-destroy')
-          ) {
+          if (modifier.path?.type !== 'GlimmerPathExpression') {
+            continue;
+          }
+          const name = modifier.path.original;
+          if (isRenderModifier(name)) {
             context.report({
               node: modifier,
               messageId: 'noRenderModifier',
-              data: { modifier: modifier.path.original },
+              data: { modifier: canonicalName(name) },
             });
           }
         }
diff --git a/tests/lib/rules/template-no-at-ember-render-modifiers.js b/tests/lib/rules/template-no-at-ember-render-modifiers.js
index 88e525ea38..4dcdb1a8f5 100644
--- a/tests/lib/rules/template-no-at-ember-render-modifiers.js
+++ b/tests/lib/rules/template-no-at-ember-render-modifiers.js
@@ -32,6 +32,25 @@ ruleTester.run('template-no-at-ember-render-modifiers', rule, {
     '<template>{{did-insert}}</template>',
     '<template>{{did-update}}</template>',
     '<template>{{will-destroy}}</template>',
+
+    // In GJS/GTS, kebab identifiers cannot be imports; these are bare paths
+    // that happen to share the canonical name but are not the render modifier.
+    {
+      filename: 'test.gjs',
+      code: '<template><div {{did-insert this.setup}}></div></template>',
+    },
+    // Unrelated imports with matching local names should not match
+    {
+      filename: 'test.gjs',
+      code: `import didInsert from './my-lib';
+        <template><div {{didInsert this.setup}}></div></template>`,
+    },
+    // Root-package import of an unknown named export is not a render modifier
+    {
+      filename: 'test.gjs',
+      code: `import { somethingElse } from '@ember/render-modifiers';
+        <template><div {{somethingElse this.setup}}></div></template>`,
+    },
   ],
 
   invalid: [
@@ -87,6 +106,68 @@ ruleTester.run('template-no-at-ember-render-modifiers', rule, {
       output: null,
       errors: [{ messageId: 'noRenderModifier' }],
     },
+
+    // GJS/GTS import-based forms — local name is user-chosen
+    {
+      filename: 'test.gjs',
+      code: `import didInsert from '@ember/render-modifiers/modifiers/did-insert';
+        <template><div {{didInsert this.setup}}></div></template>`,
+      output: null,
+      errors: [{ messageId: 'noRenderModifier' }],
+    },
+    {
+      filename: 'test.gjs',
+      code: `import didUpdate from '@ember/render-modifiers/modifiers/did-update';
+        <template><div {{didUpdate this.update}}></div></template>`,
+      output: null,
+      errors: [{ messageId: 'noRenderModifier' }],
+    },
+    {
+      filename: 'test.gjs',
+      code: `import willDestroy from '@ember/render-modifiers/modifiers/will-destroy';
+        <template><div {{willDestroy this.cleanup}}></div></template>`,
+      output: null,
+      errors: [{ messageId: 'noRenderModifier' }],
+    },
+    // Renamed default import still flags
+    {
+      filename: 'test.gjs',
+      code: `import myInsert from '@ember/render-modifiers/modifiers/did-insert';
+        <template><div {{myInsert this.setup}}></div></template>`,
+      output: null,
+      errors: [{ messageId: 'noRenderModifier' }],
+    },
+
+    // Root-package named imports — all three modifiers
+    {
+      filename: 'test.gjs',
+      code: `import { didInsert } from '@ember/render-modifiers';
+        <template><div {{didInsert this.setup}}></div></template>`,
+      output: null,
+      errors: [{ messageId: 'noRenderModifier' }],
+    },
+    {
+      filename: 'test.gjs',
+      code: `import { didUpdate } from '@ember/render-modifiers';
+        <template><div {{didUpdate this.update}}></div></template>`,
+      output: null,
+      errors: [{ messageId: 'noRenderModifier' }],
+    },
+    {
+      filename: 'test.gjs',
+      code: `import { willDestroy } from '@ember/render-modifiers';
+        <template><div {{willDestroy this.cleanup}}></div></template>`,
+      output: null,
+      errors: [{ messageId: 'noRenderModifier' }],
+    },
+    // Aliased root-package import still flags
+    {
+      filename: 'test.gjs',
+      code: `import { didInsert as myModifier } from '@ember/render-modifiers';
+        <template><div {{myModifier this.setup}}></div></template>`,
+      output: null,
+      errors: [{ messageId: 'noRenderModifier' }],
+    },
   ],
 });