Sir Joseph Jordan (c1603–1685) was a naval officer and admiral. From a Thames shipowning family, he is initially recorded as importing tobacco from Nevis and Barbados aboard the Amity. During the English Civil War, he served in the parliamentary navy commanding the merchantman Caesar in the summer guard of 1642; later that year he was recorded taking castles around the Isle of Wight. In 1643 he served as rear-admiral in the Irish guard and the following year was active off the Channel Islands and at the relief of Lyme Regis and, in 1645, the siege of Weymouth. He remained loyal to parliament during the 1648 naval revolt and in February 1649 signed remonstrance congratulating the army and the Commons for restoring liberty.