| Nickname: | Olaizola II |
| Fullname: | Aimar Olaizola |
| Birth Date: | 1979 11, df=yes |
| Birth Place: | Goizueta, Navarre |
| Height: | 1,83 m |
| Weight: | 87 kg |
| Country: | Spain |
| Province: | Navarre |
| Debut Date: | April 12, 1998 |
| Debut Fronton: | Jaian Jai fronton |
| Categories: | Hand-pelota |
| Position: | Forward |
| Management: | Asegarce |
| 1Sthand: | 2005, 2007 |
| 2Ndhand: | 1999 |
| 1Sthanddoubles: | 2008 |
| Cuatroymedio: | 2002, 2004, 2005, 2008 |
Aimar Olaizola Apezetxea, known as Olaizola II is a pelotari, brother of Olaizola I.
Olaizola started to play pelota on the local fronton of his hometown, Goizueta, Navarre.
During his career, Olaizola II won in 2005, 2007, 2012 and 2013 the main hand-pelota championship — the singles championship — additionally reaching the finals of 2003, 2006, 2009 and 2015.
| Year | Champion | Subchampion | Score | Fronton |
|---|---|---|---|---|
| 2003 | Patxi Ruiz | Olaizola II | 22-7 | Atano III |
| 2005 | Olaizola II | Martínez de Irujo | 22-18 | Atano III |
| 2006 | Martínez de Irujo | Olaizola II | 22-17 | Atano III |
| 2007 | Olaizola II | Barriola | 22-10 | Atano III |
| 2009 | Martínez de Irujo | Olaizola II | 22-12 | Atano III |
| 2012 | Olaizola II | Martínez de Irujo | 22-07 | Bizkaia |
| 2013 | Olaizola II | Martínez de Irujo | 22-07 | Bizkaia |
| 2015 | Urrutikoetxea | Olaizola II | 22-19 | Bizkaia |
| Year | Champion | Subchampion | Score | Fronton |
|---|---|---|---|---|
| 2002 | Olaizola II | Barriola | 22-13 | Ogueta |
| 2004 | Olaizola II | Barriola | 22-08 | Ogueta |
| 2005 | Olaizola II | Xala | 22-05 | Atano III |
| 2008 | Olaizola II | Martinez de Irujo | 22-17 | Atano III |
| 2011 | Olaizola II | Martínez de Irujo | 22-12 | Bizkaia |
| 2012 | Olaizola II | Bengoetxea VI | 22-9 | Ogueta |
| 2013 | Olaizola II | Martínez de Irujo | 22-16 | Ogueta |
| 2014 | Martínez de Irujo | Olaizola II | 22-17 | Bizkaia |
| Year | Champions | Subchampions | Score | Fronton |
|---|---|---|---|---|
| 2003 | Koka - Beloki | Olaizola II - Pascual | 22-15 | Atano III |
| 2006 | Martínez de Irujo - Martínez de Eulate | Olaizola II - Zearra | 22-11 | Ogueta |
| 2008 | Olaizola II - Mendizábal II | Titín III - Laskurain | 22-17 | Ogueta |
| 2009 | Mtz. de Irujo - Goñi III | Olaizola II - Mendizabal II | 22-21 | Atano III |
| 2011 | Olaizola II - Begino | Xala - Beroitz | 22-14 | Bizkaia |
| 2014 | Martínez de Irujo - Barriola | Olaizola II - Aretxabaleta | 22-13 | Bizkaia |
| 2016 | Olaizola II - Urrutikoetxea | Martínez de Irujo - Rezusta | 16-10 | Bizkaia |
(1) Two championships were played in 1999, due to disagreements between the two main professional Basque-pelota companies — Aspe and Asegarce.