Earl Alexander Leslie, of Leven, (appr. 1580 - 1661), was a Scottish soldier, in Swedish service from 1605 until 1638, beeing appointed Field Marshal in 1636. In the Thirty Years' War (1618-1648), he was one of the commanders at the Battle of Wittstock, in 1636, where he was subordinate to Johan Banér.

See also: List of Swedish military commanders\n