diff --git a/docs/src/pages/guides/localization/localization.md b/docs/src/pages/guides/localization/localization.md
index 0a248746bc80a5..2a635281bec5dc 100644
--- a/docs/src/pages/guides/localization/localization.md
+++ b/docs/src/pages/guides/localization/localization.md
@@ -34,6 +34,7 @@ const theme = createMuiTheme({
 | Italian | it-IT | `itIT` |
 | Japanese | ja-JP | `jaJP` |
 | Persian | fa-IR | `faIR` |
+| Polish | pl-PL | `plPL` |
 | Portuguese (Brazil) | pt-BR | `ptBR` |
 | Russian | ru-RU | `ruRU` |
 | Spanish | es-ES | `esES` |
diff --git a/packages/material-ui/src/locale/index.d.ts b/packages/material-ui/src/locale/index.d.ts
index 12f94736600730..713374962e9feb 100644
--- a/packages/material-ui/src/locale/index.d.ts
+++ b/packages/material-ui/src/locale/index.d.ts
@@ -5,6 +5,7 @@ export const faIR: object;
 export const frFR: object;
 export const itIT: object;
 export const jaJP: object;
+export const plPL: object;
 export const ptBR: object;
 export const ruRU: object;
 export const svSE: object;
diff --git a/packages/material-ui/src/locale/index.js b/packages/material-ui/src/locale/index.js
index 5d00af5f5196cd..410c663b6cc89c 100644
--- a/packages/material-ui/src/locale/index.js
+++ b/packages/material-ui/src/locale/index.js
@@ -148,6 +148,38 @@ export const jaJP = {
   },
 };
 
+export const plPL = {
+  props: {
+    MuiTablePagination: {
+      backIconButtonText: 'Poprzednia strona',
+      labelRowsPerPage: 'Wierszy na stronę:',
+      labelDisplayedRows: ({ from, to, count }) => `${from}-${to === -1 ? count : to} z ${count}`,
+      nextIconButtonText: 'Następna strona',
+    },
+    MuiRating: {
+      getLabelText: value => {
+        let pluralForm = 'gwiazdek';
+        const lastDigit = value % 10;
+
+        if ((value < 10 || value > 20) && lastDigit > 1 && lastDigit < 5) {
+          pluralForm = 'gwiazdki';
+        } else if (value === 1) {
+          pluralForm = 'gwiazdka';
+        }
+
+        return `${value} ${pluralForm}`;
+      },
+    },
+    MuiAutocomplete: {
+      clearText: 'Wyczyść',
+      closeText: 'Zamknij',
+      loadingText: 'Ładowanie…',
+      noOptionsText: 'Brak opcji',
+      openText: 'Otwórz',
+    },
+  },
+};
+
 export const ptBR = {
   props: {
     MuiTablePagination: {