Joseph Earl Lawther (February 11, 1876 – April 24, 1943) was an American banker, civic leader, and mayor of Dallas, Texas, from 1917–1919.
They had two children: Margaret and Lynn V. After the death of his first wife in 1924, he married Anna Florence Walden, daughter of Charles Joe Walden and Eola Betty Tedford on June 8, 1925, in Jackson County, Missouri.
He also served as president of Guardian Federal Savings & Loan Association.
He assisted the Dallas Athletic Club to increase membership and decrease indebtedness.
He was recognized for the improvement of White Rock Lake when a road around it was named for him.