Joseba Garmendia Elorriaga (born 4 October 1985 in Basauri, Biscay) is a Spanish professional footballer who plays for Real Murcia as a midfielder.
A product of Athletic Bilbao’s famed youth system, Garmendia made his first-team debut in 2006–07’s first matchday, in a 1–1 local derby with Real Sociedad. During his three-year professional spell with the Basque, he never appeared in more than 18 La Liga games; he scored his first goal in the competition on 10 December 2006, helping to a 4–2 home win against Recreativo de Huelva.
In late July 2009, Garmendia bought out the remaining year of his contract and moved to CD Numancia in the second division, in a 2+1 link – former Athletic teammate Iñigo Vélez also made the move. He continued competing in the category in the following years, with Girona FC and CD Mirandés, suffering an anterior cruciate ligament whilst at the service of the former that sidelined him for several months.
On 1 September 2014 Garmendia joined Real Murcia, freshly relegated to the third level.