 On March 14, 2019, Bethea signed with the New York Giants.In week 8 against the Detroit Lions, Bethea forced a fumble on wide receiver Kenny Golladay and recovered the football in the 31-26 loss.In week 9 on Monday night football against the Dallas Cowboys, Bethea intercepted a pass from Dak Prescott on the first play of the game and recovered a fumble forced by teammate Jabrill Peppers on Randall Cobb in the 37–18 loss.