Landaff Watson Andrews (February 12, 1803 – December 23, 1888) was a United States Representative from Kentucky.

After leaving Congress, he served in the Kentucky Senate as an independent candidate in 1857 and was again elected a member of the Kentucky House of Representatives, in 1861, and served until 1862, when he resigned.

After leaving the state legislature, Andrews was the judge of the circuit court, 1862–1868.

He resumed the practice of law in Flemingsburg, Kentucky where he died in 1888.

This article incorporates public domain material from the Biographical Directory of the United States Congress