Meseret Defar Tola is an Ethiopian long-distance runner who competes chiefly in the 3,000 metres and 5,000 metres events. She has won medals at top-tier international competitions including Olympic and World Championship gold medals over 5,000 metres. She broke the world record in the event in 2006, broke it again in 2007 and held it until 2008, when fellow Ethiopian Tirunesh Dibaba beat her time.

The 3000 metres or 3000-metre run is a track running event, also commonly known as the "3K" or "3K run", where 7.5 laps are run around an outdoor 400 m track, or 15 laps around a 200 m indoor track.