Sergio Galván Rey (born 9 June 1973 in Concepcion, Tucumán, Argentina) is a naturalised Colombian football player who, as of 2011, plays as a striker for Colombian club Santa Fe.
Although Galván Rey was developed by the renowned Boca Juniors in his native Argentina, he did not achieve much success until moving to Colombia. Galván Rey joined Colombian club Once Caldas in 1994, and proceeded to become one of the most dangerous forwards in Colombia. He scored 171 goals in his time with Once Caldas, 160 in the Colombian league, and another 11 in 15 Copa Libertadores matches. In 2003, Galván Rey helped Once Caldas win the Colombian championship, their first in 53 years; additionally, he led the team to Copas Libertadores qualification in 1999, 2002, and 2004.
Before the 2004 MLS season, Once Caldas sold Galván Rey to the MetroStars of Major League Soccer for a transfer fee in the range of half a million dollars. Although he played in 20 games, starting 10, Galván Rey finished the year with only two goals and one assist. Galván Rey's previous club, Once Caldas, went on to win the Copa Libertadores in his absence.
In 2005, Galván Rey played much better, scoring two goals against the Kansas City Wizards to bring the MetroStars back from a 2-0 deficit. By the end of the season, he tallied eight goals in all competitions, which had him tied for the team's third leading scorer. However, his salary demands were overwhelming, and the MetroStars decided not to bring Galván Rey back for 2006. He then signed with Atlético Nacional.
In the first half of the 2006 season at Atletico Nacional, Sergio Galvan Rey tallied 11 goals. He put his renewed form on display against America de Cali on May 21 scoring 5 goals in a single match. Galvan Rey finished the 2006 campaign with a total of 19 goals. His last goal of the season came on December 2, 2006 against Boyacá Chicó F.C. in a 2-1 win for Nacional.
The 2007 season started well for Galvan Rey when he netted a goal in Nacional's first match against La Equidad. He managed to tally a total of 13 goals in the first half of the season with his last goal coming during a tournament match against Boyacá Chicó F.C. on June 10, 2007. He tallied 6 more goals through December 2007. He scored two against Cucuta Deportivo on December 8, 2007.
In 2008, Galvan Rey started the season with 4 goals through July. Entering November 2008, he added 7 more goals to his season total.
In 2010, Galvan Rey joined America de Cali. He started the season only 5 goals away from becoming the all time scorer in Colombian League history. On April 25, he became the best scorer in the Colombian League due to the fact he overcame Ivan Rene Valenciano as the all time scorer. It is safe to say that by the end of this season he will stand alone as the all time scorer in Colombian League history. Galvan Rey has a good chance of standing alone at the top of the of the all time goal scorer list for a very long time. Nestor Salazar with 134 goals is the player closest to Galvan Rey's record. Nestor Salazar is 36 years old and is unlikely to even come close to breaking the all time goal scorer record. Furthermore most Colombian players who are good goal scorers end up transferring to other leagues. The last three season leading goal scorers play in other leagues. Jackson Martinez who scored 18 goals in the Finalizacion-2009 is now playing for Jaguares in the Mexican league.Teófilo Gutiérrez who scored 16 goals in the Apertura-2009 is now playing for Racing Club de Avellaneda in the Argentinean league. Freddy Montero who scored 16 goals in the Finalizacion-2008 is playing for the Seattle Sounders of Major League Soccer.
In February 2011, Galvan Rey moved to Santa Fe. He made his Santa Fe debut in which he came on as a substitute.