diff --git a/apps/web/__tests__/unit/loom-csv.test.ts b/apps/web/__tests__/unit/loom-csv.test.ts
index 0c50abfc8f..f78f011f09 100644
--- a/apps/web/__tests__/unit/loom-csv.test.ts
+++ b/apps/web/__tests__/unit/loom-csv.test.ts
@@ -33,6 +33,66 @@ describe("concierge Loom CSV", () => {
 	});
 });
 
+describe("Loom CSV delimiters", () => {
+	it("reads semicolon separated files", () => {
+		expect(
+			parseLoomCsvRecords(
+				"\uFEFFloom_video_url;user_email\r\n" +
+					"https://www.loom.com/share/0123456789abcdef;owner@example.com\r\n",
+			),
+		).toEqual([
+			["loom_video_url", "user_email"],
+			["https://www.loom.com/share/0123456789abcdef", "owner@example.com"],
+		]);
+	});
+
+	it("keeps quoted commas inside semicolon separated cells", () => {
+		const rows = parseConciergeLoomCsv(
+			"loom_video_url;user_email;space_name\n" +
+				"https://www.loom.com/share/0123456789abcdef;owner@example.com;" +
+				JSON.stringify("Sales, Europe") +
+				"\n",
+		);
+		expect(rows[0]?.spaceName).toBe("Sales, Europe");
+		expect(rows[0]?.userEmail).toBe("owner@example.com");
+	});
+
+	it("keeps comma files that have semicolons in their values", () => {
+		expect(
+			parseLoomCsvRecords(
+				"url," +
+					JSON.stringify("Folder; Archive") +
+					",title\n" +
+					"https://www.loom.com/share/0123456789abcdef,a;b;c,Demo; take 2\n",
+			),
+		).toEqual([
+			["url", "Folder; Archive", "title"],
+			["https://www.loom.com/share/0123456789abcdef", "a;b;c", "Demo; take 2"],
+		]);
+	});
+
+	it("finds the delimiter after leading blank lines", () => {
+		const rows = parseConciergeLoomCsv(
+			"\r\n;;\n  \nloom_video_url;user_email\n" +
+				"https://www.loom.com/share/0123456789abcdef;owner@example.com\n",
+		);
+		expect(rows).toEqual([
+			{
+				rowNumber: 2,
+				loomUrl: "https://www.loom.com/share/0123456789abcdef",
+				userEmail: "owner@example.com",
+				spaceName: undefined,
+			},
+		]);
+	});
+
+	it("treats a single column file as comma separated", () => {
+		expect(
+			parseLoomCsvRecords("url\nhttps://www.loom.com/share/a;b\n"),
+		).toEqual([["url"], ["https://www.loom.com/share/a;b"]]);
+	});
+});
+
 describe("Loom CSV results cells", () => {
 	it("keeps plain values unchanged", () => {
 		expect(formatLoomCsvCell("owner@example.com")).toBe("owner@example.com");
diff --git a/apps/web/lib/loom-csv.ts b/apps/web/lib/loom-csv.ts
index d39fcb582e..499a334ca7 100644
--- a/apps/web/lib/loom-csv.ts
+++ b/apps/web/lib/loom-csv.ts
@@ -2,6 +2,25 @@ import type { LoomCsvImportRow } from "@/actions/loom";
 
 export const MAX_LOOM_CSV_IMPORT_ROWS = 3000;
 
+function detectLoomCsvDelimiter(input: string) {
+	let commas = 0;
+	let semicolons = 0;
+	let hasContent = false;
+	let inQuotes = false;
+	for (const char of input) {
+		if (char === "\u0022") inQuotes = !inQuotes;
+		else if (inQuotes) hasContent ||= char.trim().length > 0;
+		else if (char === "\n" || char === "\r") {
+			if (hasContent) break;
+			commas = 0;
+			semicolons = 0;
+		} else if (char === ",") commas += 1;
+		else if (char === ";") semicolons += 1;
+		else hasContent ||= char.trim().length > 0;
+	}
+	return semicolons > commas ? ";" : ",";
+}
+
 export function parseLoomCsvRecords(text: string) {
 	const records: string[][] = [];
 	let field = "";
@@ -9,6 +28,7 @@ export function parseLoomCsvRecords(text: string) {
 	let inQuotes = false;
 	const input = text.replace(/^\uFEFF/, "");
 	const quote = "\u0022";
+	const delimiter = detectLoomCsvDelimiter(input);
 
 	for (let index = 0; index < input.length; index += 1) {
 		const char = input.charAt(index);
@@ -24,7 +44,7 @@ export function parseLoomCsvRecords(text: string) {
 			continue;
 		}
 
-		if (char === "," && !inQuotes) {
+		if (char === delimiter && !inQuotes) {
 			row.push(field.trim());
 			field = "";
 			continue;