Yom Tov Lipman Lipkin (Hebrew: יום טוב ליפמן ליפקין, Russian: Липман Израилевич Липкин; 1840 – February 21 [O.S. February 9] 1876) was a Lithuanian Jewish mathematician and inventor. He was the youngest son of notable Rabbi Yisroel Salanter, the father of the Musar movement.