Frederik Boi (born 25 October 1981 in Bruges) is a Belgian professional football player who currently plays for Cercle Brugge, on loan from Oud-Heverlee Leuven. Until 2011, Boi had played his whole career for Cercle Brugge. Initially, his position on the field used to be side midfielder or winger. However, starting from the 2007-08 season, Cercle coach Glen De Boeck fielded Boi as right back. Ever since, De Boeck has been calling Boi the best right wing back in the Belgian competition. Boi used to be a team mate of Belgian international Thomas Buffel during his youth schooling at Cercle.
It took quite a long time for Boi to definitively achieve a place in Cercle's starting line-up, mainly because of Boi's thin appearance during his era as a youth player. However, due to Cercle not playing at the highest level of Belgian football, Boi was eventually given an opportunity. As a result, when Cercle promoted to the highest level, Boi was physically ready to take up his responsibility as a professional footballer. Before becoming a professional player, Frederik Boi worked for the Belgian bookstore Standaard Boekhandel as a computer programmer.
Frederik Boi made himself immortal for the Cercle fans, scoring the only goal in the victory against city rivals Club Brugge on December 17, 2006. It was the first win in 13 years for Cercle in the Bruges derby. (Frederik Boi's famous goal on Youtube.com)
In 2011, Boi, regarded as a Cercle Brugge monument, transferred to the newly-promoted First Division side OH Leuven, where he appeared frequently during his first season and scored two goals in a 3-1 win against Club Brugge. Halfway through the 2012–13 season, after requesting a transfer for not receiving much playing time, Boi was loaned out back to his former team for the remainder of the season.