The 1986 Livingston Open was a men's tennis tournament played on outdoor hard courts that was part of the 1986 Nabisco Grand Prix.

It was played at Newark Academy in Livingston, New Jersey in the United States from July 21 through July 28, 1986.

Second-seeded Brad Gilbert won his second consecutive singles title at the event.

[3] Brad Gilbert defeated Mike Leach 6–2, 6–2 Bob Green / Wally Masur defeated Sammy Giammalva Jr. / Greg Holmes 5–7, 6–4, 6–4