Jessicah Lee Schipper, OAM (born 19 November 1986) is an Australian former competition swimmer. She trained at the Redcliffe Leagues Lawnton club in Brisbane, under veteran coach Ken Wood up until the conclusion of the 2008 Summer Olympics. Schipper then trained under the guidance of Stephan Widmer with the Commercial Swimming Club. She was awarded the Order of Australia Medal in January 2005 for her services to swimming.

In 2003, she finished high school at Pine Rivers State High School.

Schipper made her debut for Australia at the 2003 World Aquatics Championships in Barcelona, winning the bronze medal as part of the 4×100-metre medley relay team.

In 2004, she competed in the 2004 Summer Olympics in Athens, placing 4th in the 100-metre butterfly with the time of 58.22 seconds. She also collected the gold medal in the 4×100-metre medley relay, having swum the butterfly leg in the heats of the event.

At the 2005 World Aquatics Championships in Montreal, she won the silver medal in the 200-metre butterfly with the time of 2:05.65, only 0.04 of a second behind Otylia Jędrzejczak of Poland, who set a new world record in the event. However, the race was overshadowed by the video replay showing that Jędrzejczak touched the finishing wall with only one hand, which is illegal under the butterfly rules. Doing so allows the swimmer to stretch out further with their single hand. Video replays cannot be used in appeals against race results. Schipper also won the gold in the 100-metre butterfly (57.23) and in the 4×100-metre medley relay, with teammates Sophie Edington, Leisel Jones and Libby Lenton. In doing so, she erased the Australian records in both the 100- and 200-metre butterfly set by Petria Thomas and Susie O'Neill, respectively.

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