Wendy Barrien Lawrence (born July 2, 1959) is a retired United States Navy Captain, an engineer, and former helicopter pilot and NASA astronaut.

After completion of a master's degree program at MIT and Woods Hole in 1988, she was assigned to Helicopter Anti-Submarine Squadron Light 30 (HSL-30) as Officer-in-charge of Detachment Alpha.

In September 1996 she began training as a crew member for a 4-month mission on the Russian Space Station Mir.

However, she was replaced by David Wolf due to concerns over minimum size requirements for the Russian Orlan EVA suit.

[12] STS-86 Atlantis (September 25 to October 6, 1997) was the seventh mission to rendezvous and dock with the Russian Space Station Mir.

Highlights included the exchange of U.S. crew members Mike Foale and David Wolf, a spacewalk by Scott Parazynski and Vladimir Titov to retrieve four experiments first deployed on Mir during the STS-76 docking mission, the transfer to Mir of 10,400 pounds of science and logistics, and the return of experiment hardware and results to Earth.

[13] STS-91 Discovery (June 2–12, 1998) was the 9th and final Shuttle-Mir docking mission and marked the conclusion of the joint U.S./Russian Phase I Program.

[14] STS-114 Discovery (July 26 – August 9, 2005) was the first "Return to Flight" mission following the Space Shuttle Columbia disaster.