diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8134f02c5b7..391459e7fc5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,10 @@
 
 - Added `status` prop to `EuiStep` for additional styling ([#673](https://github.com/elastic/eui/pull/673))
 
+**Bug fixes**
+
+- Fixed `EuiCard` `icon` prop to include user provided className ([#684](https://github.com/elastic/eui/pull/684))
+
 ## [`0.0.42`](https://github.com/elastic/eui/tree/v0.0.42)
 
 - Added `EuiDatePicker` component for date/time input ([#644](https://github.com/elastic/eui/pull/644))
diff --git a/src/components/card/__snapshots__/card.test.js.snap b/src/components/card/__snapshots__/card.test.js.snap
index fda255940d0..4b8da3aaff0 100644
--- a/src/components/card/__snapshots__/card.test.js.snap
+++ b/src/components/card/__snapshots__/card.test.js.snap
@@ -1,5 +1,125 @@
 // Jest Snapshot v1, https://goo.gl/fbAQLP
 
+exports[`EuiCard icon 1`] = `
+<div
+  class="euiCard euiCard--centerAligned"
+>
+  <span
+    class="euiCard__top"
+  >
+    <svg
+      class="euiIcon euiIcon--medium myIconClass euiCard__icon"
+      height="32"
+      viewBox="0 0 32 32"
+      width="32"
+      xlink="http://www.w3.org/1999/xlink"
+      xmlns="http://www.w3.org/2000/svg"
+    >
+      <defs>
+        <path
+          d="M0 0h32v32H0z"
+          id="app_apm-a"
+        />
+        <path
+          d="M0 0h32v32H0z"
+          id="app_apm-c"
+        />
+        <path
+          d="M0 0h32v32H0z"
+          id="app_apm-e"
+        />
+        <path
+          d="M0 0h32v32H0z"
+          id="app_apm-g"
+        />
+      </defs>
+      <g
+        fill="none"
+        fill-rule="evenodd"
+      >
+        <mask
+          fill="#fff"
+          id="app_apm-b"
+        >
+          <use
+            href="#app_apm-a"
+          />
+        </mask>
+        <path
+          d="M5.44 9.6h21.12a2.24 2.24 0 0 1 0 4.48H5.44a2.24 2.24 0 1 1 0-4.48z"
+          fill="#13A7DF"
+          fill-rule="nonzero"
+          mask="url(#app_apm-b)"
+        />
+        <mask
+          fill="#fff"
+          id="app_apm-d"
+        >
+          <use
+            href="#app_apm-c"
+          />
+        </mask>
+        <path
+          d="M21.44 26.24h8.32a2.24 2.24 0 0 1 0 4.48h-8.32a2.24 2.24 0 1 1 0-4.48z"
+          fill="#00BFB3"
+          fill-rule="nonzero"
+          mask="url(#app_apm-d)"
+        />
+        <mask
+          fill="#fff"
+          id="app_apm-f"
+        >
+          <use
+            href="#app_apm-e"
+          />
+        </mask>
+        <path
+          d="M2.24 1.28h11.52a2.24 2.24 0 0 1 0 4.48H2.24a2.24 2.24 0 1 1 0-4.48z"
+          fill="#00BFB3"
+          fill-rule="nonzero"
+          mask="url(#app_apm-f)"
+        />
+        <g>
+          <mask
+            fill="#fff"
+            id="app_apm-h"
+          >
+            <use
+              href="#app_apm-g"
+            />
+          </mask>
+          <path
+            d="M5.44 17.92h11.52a2.24 2.24 0 0 1 0 4.48H5.44a2.24 2.24 0 0 1 0-4.48z"
+            fill="#00BFB3"
+            fill-rule="nonzero"
+            mask="url(#app_apm-h)"
+          />
+        </g>
+      </g>
+    </svg>
+  </span>
+  <span
+    class="euiCard__content"
+  >
+    <span
+      class="euiTitle euiTitle--medium euiCard__title"
+    >
+      Card title
+    </span>
+    <div
+      class="euiText euiText--small euiCard__description euiText--constrainedWidth"
+    >
+      <p>
+        Card description
+      </p>
+    </div>
+  </span>
+  <span
+    class="euiCard__footer"
+  />
+</div>
+`;
+
 exports[`EuiCard is rendered 1`] = `
 <div
   aria-label="aria-label"
diff --git a/src/components/card/card.js b/src/components/card/card.js
index 78bb7d91295..a6ae8518a08 100644
--- a/src/components/card/card.js
+++ b/src/components/card/card.js
@@ -46,7 +46,7 @@ export const EuiCard = ({
   if (icon) {
     iconNode = React.cloneElement(
       icon,
-      { className: 'euiCard__icon' }
+      { className: classNames(icon.props.className, 'euiCard__icon') }
     );
   }
 
diff --git a/src/components/card/card.test.js b/src/components/card/card.test.js
index 1f676405304..649127076cf 100644
--- a/src/components/card/card.test.js
+++ b/src/components/card/card.test.js
@@ -2,7 +2,13 @@ import React from 'react';
 import { render, mount } from 'enzyme';
 import { requiredProps } from '../../test';
 
-import { EuiCard } from './card';
+import {
+  EuiCard,
+} from './card';
+
+import {
+  EuiIcon,
+} from '../icon';
 
 describe('EuiCard', () => {
   test('is rendered', () => {
@@ -14,6 +20,19 @@ describe('EuiCard', () => {
       .toMatchSnapshot();
   });
 
+  test('icon', () => {
+    const component = render(
+      <EuiCard
+        title="Card title"
+        description="Card description"
+        icon={<EuiIcon className="myIconClass" type="apmApp"/>}
+      />
+    );
+
+    expect(component)
+      .toMatchSnapshot();
+  });
+
   describe('onClick', () => {
     it('supports onClick as a link', () => {
       const handler = jest.fn();