| Lucas Valdemarín | |
| Fullname: | Lucas Martín Valdemarín |
| Birth Date: | 13 May 1978 |
| Clubnumber: | 9 |
| Youthyears1: | 1982–1996 |
| Years1: | 1996 |
| Years2: | 1996–2006 |
| Years3: | 1999 |
| Years4: | 2001 |
| Years5: | 2005 |
| Years6: | 2005–2006 |
| Years7: | 2006–2007 |
| Years8: | 2007–2008 |
| Years9: | 2008–2009 |
| Years10: | 2009 |
| Years11: | 2009–2010 |
| Clubs3: | → Independiente Rivadavia (loan) |
| Clubs4: | → Unión Española (loan) |
| Clubs5: | → Elche CF (loan) |
| Clubs6: | → Racing Club (loan) |
| Clubs10: | → San Luis (loan) |
| Caps1: | 2 |
| Caps2: | 89 |
| Caps3: | 15 |
| Caps4: | 2 |
| Caps5: | 4 |
| Caps6: | 16 |
| Caps7: | 32 |
| Caps8: | 20 |
| Caps9: | 17 |
| Caps10: | 3 |
| Caps11: | 19 |
| Goals1: | 0 |
| Goals2: | 20 |
| Goals3: | 8 |
| Goals4: | 0 |
| Goals5: | 0 |
| Goals6: | 3 |
| Goals7: | 8 |
| Goals8: | 6 |
| Goals9: | 2 |
| Goals10: | 0 |
| Goals11: | 6 |
| Pcupdate: | 16:35, 18 July 2009 (UTC) |
Lucas Martín Valdemarín (born 13 May 1978) is a former footballer from Argentina who played for Vélez, Unión Española (Chile), Elche (Spain), AIK (Sweden) and Club San Luis (Mexico).
Valdemarín developed his career as a youth with Sportivo 9 de Julio. In 1996, he was signed by Talleres de Córdoba, but shortly after Vélez Sársfield acquired his playing rights. During his period at Vélez Valdemarín struggled to earn a spot in the first team, and the club loaned him to other teams multiple times: to Independiente Rivadavia and Racing Club in Argentina, Unión Española of Chile and Elche CF from Spain, with two more spells with Vélez in between.
In 2006, he became a free agent and signed for Arsenal de Sarandí, where he formed a striker partnership with Mauro Óbolo. The following year, both relocated to Sweden to play for AIK Fotboll. In 2008 Valdemarín reached a mutual agreement with AIK to terminate his contract, and joined Colón de Santa Fe. He was a starter at the beginning, but his due to his lack of effectivity he was relegated to the bench.[1] During the first semester of 2009, he had a brief spell in Mexico with San Luis F.C.[2] Back in Colón he couldn't secure a place in the squad, and transferred to Defensa y Justicia in July 2009.[3] In June 2010 ends his career.