Idrettslaget Flint is a Norwegian sports club from Søndre Slagen, Tønsberg, Vestfold. It has sections for association football, team handball, volleyball, table tennis and track and field.It was founded on 28 April 1917.The women's handball team have been playing in Postenligaen since 2010, having won the First Division, the second tier, in the 2009–10 season.On 10 October 2001, the football section cooperated with 19 other teams in the region to form an elite umbrella team, FK Tønsberg.