diff --git a/src/main/java/xyz/zhouxy/plusone/commons/function/ThrowingFunction.java b/src/main/java/xyz/zhouxy/plusone/commons/function/ThrowingFunction.java
new file mode 100644
index 0000000..08ed960
--- /dev/null
+++ b/src/main/java/xyz/zhouxy/plusone/commons/function/ThrowingFunction.java
@@ -0,0 +1,29 @@
+/*
+ * Copyright 2025 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package xyz.zhouxy.plusone.commons.function;
+
+@FunctionalInterface
+public interface ThrowingFunction<T, R, E extends Throwable> {
+
+    /**
+     * Applies this function to the given argument.
+     *
+     * @param t the function argument
+     * @return the function result
+     */
+    R apply(T t) throws E;
+
+}
diff --git a/src/main/java/xyz/zhouxy/plusone/commons/function/package-info.java b/src/main/java/xyz/zhouxy/plusone/commons/function/package-info.java
index 757c37a..2c731f4 100644
--- a/src/main/java/xyz/zhouxy/plusone/commons/function/package-info.java
+++ b/src/main/java/xyz/zhouxy/plusone/commons/function/package-info.java
@@ -32,6 +32,7 @@
  * | UnaryOperator | CharUnaryOperator    | char applyAsChar(char)           |
  * | Throwing      | Executable           | void execute() throws E          |
  * | Throwing      | ThrowingConsumer     | void accept(T) throws E          |
+ * | Throwing      | ThrowingFunction     | R apply(T) throws E              |
  * | Throwing      | ThrowingPredicate    | boolean test(T) throws E         |
  * | Throwing      | ThrowingSupplier     | T get() throws E                 |
  * | Optional      | OptionalSupplier     | Optional&lt;T&gt; get() throws E       |