diff --git a/src/l10n/index.ts b/src/l10n/index.ts
index c767f87de..8daf7635f 100644
--- a/src/l10n/index.ts
+++ b/src/l10n/index.ts
@@ -47,6 +47,7 @@ import { Norwegian as no } from "./no";
 import { Punjabi as pa } from "./pa";
 import { Polish as pl } from "./pl";
 import { Portuguese as pt } from "./pt";
+import { Romansh as rm } from "./rm";
 import { Romanian as ro } from "./ro";
 import { Russian as ru } from "./ru";
 import { Sinhala as si } from "./si";
@@ -114,6 +115,7 @@ const l10n: Record<key, CustomLocale> = {
   pa,
   pl,
   pt,
+  rm,
   ro,
   ru,
   si,
diff --git a/src/l10n/rm.ts b/src/l10n/rm.ts
new file mode 100644
index 000000000..d7c2fd0e4
--- /dev/null
+++ b/src/l10n/rm.ts
@@ -0,0 +1,74 @@
+/* Romansh (Swiss) locals for flatpickr */
+import { CustomLocale } from "../types/locale";
+import { FlatpickrFn } from "../types/instance";
+
+const fp =
+  typeof window !== "undefined" && window.flatpickr !== undefined
+    ? window.flatpickr
+    : ({
+        l10ns: {},
+      } as FlatpickrFn);
+
+export const Romansh: CustomLocale = {
+  weekdays: {
+    shorthand: ["Du", "Gli", "Ma", "Me", "Gie", "Ve", "So"],
+    longhand: [
+      "Dumengia",
+      "Glindesdi",
+      "Mardi",
+      "Mesemna",
+      "Gievgia",
+      "Venderdi",
+      "Sonda",
+    ],
+  },
+  months: {
+    shorthand: [
+      "Schan",
+      "Favr",
+      "Mars",
+      "Avr",
+      "Matg",
+      "Zercl",
+      "Fan",
+      "Avust",
+      "Sett",
+      "Oct",
+      "Nov",
+      "Dec",
+    ],
+    longhand: [
+      "Schaner",
+      "Favrer",
+      "Mars",
+      "Avrigl",
+      "Matg",
+      "Zercladur",
+      "Fanadur",
+      "Avust",
+      "Settember",
+      "October",
+      "November",
+      "December",
+    ],
+  },
+
+  firstDayOfWeek: 1,
+  hourAriaLabel: "Ura",
+  minuteAriaLabel: "Minuta",
+  monthAriaLabel: "Mea",
+  rangeSeparator: " cun ",
+  scrollTitle: "Scurra per incremar",
+  time_24hr: true,
+  toggleTitle: "Chasch cliccar per commutar",
+  weekAbbreviation: "Em",
+  yearAriaLabel: "Onn",
+
+  ordinal: () => {
+    return "";
+  },
+};
+
+fp.l10ns.rm = Romansh;
+
+export default fp.l10ns;
diff --git a/src/types/locale.ts b/src/types/locale.ts
index 149e9112b..05239b139 100644
--- a/src/types/locale.ts
+++ b/src/types/locale.ts
@@ -161,6 +161,7 @@ export type key =
   | "pa"
   | "pl"
   | "pt"
+  | "rm"
   | "ro"
   | "ru"
   | "si"