diff --git a/.changeset/tender-bats-switch.md b/.changeset/tender-bats-switch.md
new file mode 100644
index 0000000000..bff8b3f867
--- /dev/null
+++ b/.changeset/tender-bats-switch.md
@@ -0,0 +1,5 @@
+---
+'svelte': patch
+---
+
+feat: treat tag with `[` as a component, even if lowercase
diff --git a/packages/svelte/src/compiler/phases/1-parse/state/element.js b/packages/svelte/src/compiler/phases/1-parse/state/element.js
index 12e75400be..c15b27894e 100644
--- a/packages/svelte/src/compiler/phases/1-parse/state/element.js
+++ b/packages/svelte/src/compiler/phases/1-parse/state/element.js
@@ -74,7 +74,7 @@ function parent_is_shadowroot_template(stack) {
 
 const regex_closing_textarea_tag = /^<\/textarea(\s[^>]*)?>/i;
 const regex_closing_comment = /-->/;
-const regex_component_name = /^(?:[A-Z]|[A-Za-z][A-Za-z0-9_$]*\.)/;
+const regex_component_name = /^(?:[A-Z]|[A-Za-z][A-Za-z0-9_$]*(?:\.|\[))/;
 
 /** @param {Parser} parser */
 export default function element(parser) {
diff --git a/packages/svelte/tests/runtime-runes/samples/dot-notation-component/_config.js b/packages/svelte/tests/runtime-runes/samples/dot-notation-component/_config.js
index 3b44dd63ca..d3384994ad 100644
--- a/packages/svelte/tests/runtime-runes/samples/dot-notation-component/_config.js
+++ b/packages/svelte/tests/runtime-runes/samples/dot-notation-component/_config.js
@@ -1,5 +1,5 @@
 import { test } from '../../test';
 
 export default test({
-	html: '<h1>hello</h1>'
+	html: '<h1>hello</h1><h1>hello</h1><h1>hello</h1>'
 });
diff --git a/packages/svelte/tests/runtime-runes/samples/dot-notation-component/main.svelte b/packages/svelte/tests/runtime-runes/samples/dot-notation-component/main.svelte
index 12e9d22b36..60b1f48bcf 100644
--- a/packages/svelte/tests/runtime-runes/samples/dot-notation-component/main.svelte
+++ b/packages/svelte/tests/runtime-runes/samples/dot-notation-component/main.svelte
@@ -2,6 +2,14 @@
 	import child from './child.svelte';
 
 	const components = { child };
+
+	const arr = [child];
+
+	const mixed = [components];
 </script>
 
 <components.child />
+
+<arr[0] />
+
+<mixed[0].child />