diff --git a/__tests__/suits/Validator.test.tsx b/__tests__/suits/Validator.test.tsx
index afffece..ad50bb0 100644
--- a/__tests__/suits/Validator.test.tsx
+++ b/__tests__/suits/Validator.test.tsx
@@ -109,7 +109,7 @@ describe('test validator', () => {
 
     it('should merge rules', () => {
         const rules = Validator.mergeRules(['rule_one', 'rule_two'], 'rule_tree|rule_four', ['rule_five|rule_six']);
-        expect(rules.length).toBe(6);
+        expect(rules.length).toBe(5);
     });
 
     it('should throw an error when trying to get area when not in area', () => {
diff --git a/__tests__/suits/rules/regex.test.tsx b/__tests__/suits/rules/regex.test.tsx
new file mode 100644
index 0000000..8786d5a
--- /dev/null
+++ b/__tests__/suits/rules/regex.test.tsx
@@ -0,0 +1,50 @@
+import { Validator } from '@/Validator';
+import { mount } from 'enzyme';
+import { ValidatorArea, ValidatorAreaProps } from '@/components/ValidatorArea';
+import React from 'react';
+import regex from '@/rules/regex';
+import tick from '../../common/tick';
+
+describe('test regex rule', () => {
+    beforeEach(() => {
+        Validator.extend('regex', regex);
+    });
+
+    it('should always validate inputs and not validate non-inputs', async (): Promise<void> => {
+        const input = document.createElement('input');
+        const canvas = document.createElement('canvas');
+        input.value = 'foo,|bar';
+
+        const validator_input = new Validator([
+            input
+        ],
+        ['regex:(\\w)+,(\\w)+'],
+        '');
+
+        const validator_canvas = new Validator([
+            canvas
+        ],
+        ['regex:(\\w)+,(\\w)+'],
+        '');
+
+        await validator_input.validate();
+        expect(validator_input.getErrors().length).toBe(1);
+
+        await validator_canvas.validate();
+        expect(validator_canvas.getErrors().length).toBe(0);
+    });
+
+    it('should validate select', async () => {
+        const area = mount<ValidatorArea, ValidatorAreaProps>(
+            <ValidatorArea rules="regex:(\w)+,(\w)+">
+                <select name="test">
+                    <option value="4" selected>Option</option>
+                </select>
+            </ValidatorArea>
+        );
+
+        area.find('select').simulate('blur');
+        await tick();
+        expect(area.state().errors.length).toBe(1);
+    });
+});
diff --git a/src/Validator.ts b/src/Validator.ts
index 7c6f09e..db4bade 100644
--- a/src/Validator.ts
+++ b/src/Validator.ts
@@ -124,23 +124,35 @@ export class Validator {
         return typeof Validator.rules[rule] === 'function';
     }
 
+    /**
+     * Get the rule name and the parameters as tuple
+     */
+    private static getRuleNameAndParameters(rule: string): [string, string[]] {
+        const [name, ...splittedParameters] = rule.split(':');
+        const parameters = splittedParameters.join(':');
+
+        if (['regex'].indexOf(name) !== -1) {
+            return [name, [parameters]];
+        }
+
+        return [name, parameters.split(',')];
+    }
+
     /**
      * Validate a specific rule
      */
     private async validateRule(rule: string): Promise<boolean> {
-        const [ruleName, ruleArgs = ''] = rule.split(':');
+        const [ruleName, ruleParameters] = Validator.getRuleNameAndParameters(rule);
 
         if (Validator.ruleExists(ruleName)) {
             const ruleObj: RuleObject = Validator.isRuleFunction(ruleName)
                 ? (Validator.rules[ruleName] as RuleFunction)(this)
                 : Validator.rules[ruleName] as RuleObject;
 
-            const ruleArgsArray = ruleArgs.split(',');
-
-            const passed = await ruleObj.passed(this.elements, ...ruleArgsArray);
+            const passed = await ruleObj.passed(this.elements, ...ruleParameters);
 
             if(!passed) {
-                this.errors.push(this.localize(ruleObj.message(), ...ruleArgsArray));
+                this.errors.push(this.localize(ruleObj.message(), ...ruleParameters));
                 return false;
             }
 
@@ -215,12 +227,12 @@ export class Validator {
      * Merges rules from different sources into one array
      */
     public static mergeRules(...rules: RuleOptions[]): string[] {
-        const mergedRules: string[] = [];
+        let mergedRules: string[] = [];
         rules.forEach((rule: string | string[]) => {
             if (typeof rule === 'string') {
                 rule.split('|').forEach((subRule) => mergedRules.push(subRule));
             } else if (Array.isArray(rule) && rule.length) {
-                Validator.mergeRules(...rule).forEach((subRule) => mergedRules.push(subRule));
+                mergedRules = [...mergedRules, ...rule];
             }
         });
 
diff --git a/src/rules/index.ts b/src/rules/index.ts
index 35abf5e..784b227 100644
--- a/src/rules/index.ts
+++ b/src/rules/index.ts
@@ -2,4 +2,5 @@ export { default as min } from '@/rules/min';
 export { default as max } from '@/rules/max';
 export { default as required } from '@/rules/required';
 export { default as activeUrl } from '@/rules/activeUrl';
+export { default as regex } from '@/rules/regex';
 export { IncorrectArgumentTypeError } from '@/rules/IncorrectArgumentTypeError';
diff --git a/src/rules/regex.ts b/src/rules/regex.ts
new file mode 100644
index 0000000..51334a8
--- /dev/null
+++ b/src/rules/regex.ts
@@ -0,0 +1,21 @@
+import { isInputElement, isSelectElement, getValue } from '@/common/dom';
+
+
+export default {
+    passed(elements: HTMLElement[], pattern: string): boolean {
+        return elements.every((element: HTMLElement) => {
+            const matchesRegex = (value: string) => new RegExp(pattern).test(value);
+
+            if (isInputElement(element) || isSelectElement(element)) {
+                const values = getValue(element).filter(Boolean);
+
+                return values.every((value) => matchesRegex(value));
+            }
+
+            return true;
+        })
+    },
+    message(): string {
+        return '{name} heeft een ongeldig formaat';
+    }
+}