Petra Lammert (born 3 March 1984 in Freudenstadt, Baden-Württemberg) is a former German shot putter and current bobsledder. She was the 2009 European Indoor champion in the shot put and medallist at the 2006 European Athletics Championships. Her personal best throw in the shot put is 20.04 metres, achieved in May 2007 in Zeven. She was the runner-up in the two-woman bobsled at the 2012 World Championships.