Sebastijan Pecjak (27 July 1976–6 July 2012) was a Slovenian darts player who was most notable for representing Slovenia at the 2010 PDC World Cup of Darts along with team mate Osmann Kijamet.
They lost to Sweden in the first round.
Pecjak won the Soft Tip Bullshooter World Championship in 2009.
In the same year, he reached the last 32 of the German Darts Championship.Pecjak died on 6 July 2012, after a motorcycle accident in Ljubljana.