Lawrence C. Phipps (August 30, 1862-March 1, 1958) was a United States Senator representing Colorado from 1919 until 1931. Phipps was born in Amityville, Pennsylvania but grew up in Pittsburgh, Pennsylvania where he joined the Carnegie Steel Company as a clerk and eventually advanced to first vice president. He retired in 1901 and moved to Denver, Colorado, where he was active in investments, and was president of the Colorado Taxpayers's Protective League in 1917. He was elected to the United States Senate as a member of the Republican Party in 1918, was reelected twice, and did not run in 1930.