USS Liberty III (SP-1229), sometimes written Liberty # 3, and also referred to during her naval career as Liberty and as Pilot Boat Liberty, No. 3, was a United States Navy patrol vessel in commission from 1917 to 1919. The Liberty, was a pilot boat from 1896-1917. She was a replacement for the pilot boat D. J. Lawlor. After World War I, the Liberty returned to pilot service until 1934 when she was purchased as a yacht.