|Full name||Víctor Unamuno Ibarzabal|
|Date of birth||21 May 1909|
|Place of birth||Bergara, Spain|
|Date of death||20 May 1988(aged 78)|
|Place of death||Durango, Spain|
|* Senior club appearances and goals counted for the domestic league only.
Unamuno was born in Bergara, Gipuzkoa. After helping Deportivo Alavés to the semi-finals of the 1928 Copa del Rey he was signed by neighbouring Athletic Bilbao to be part of their team in the newly-formed national league. He went on win two La Liga titles and four consecutive domestic cups, notably forming an attacking partnership with Bata and Guillermo Gorostiza.
After leaving Seville, Unamuno's career was interrupted by the Spanish Civil War, and he subsequently returned to Athletic. In the 1939–40 campaign he netted 20 times – and Gorostiza added 16 – en route to being crowned the competition's Pichichi, helping the side to third place; he retired in 1942, aged 33.
Unamuno's younger brother, Vicente (1917–1988, known as Unamuno II), was also a footballer and a forward. The siblings were teammates at Athletic Bilbao during 1939–40 even though the latter did not appear in the league, but the pair did help the club win the Biscay Championship in that year; the former died in Durango, Biscay, one day before his 79th birthday.
- La Liga: 1929–30, 1930–31, 1934–35
- Copa del Rey: 1930, 1931, 1932, 1933
- Biscay Championship: 1928–29, 1930–31, 1931–32, 1932–33, 1939–40
- "Yo jugué en el Real Betis: Victorio Unamuno" [I played for Real Betis: Victorio Unamuno] (in Spanish). Vavel. 22 October 2016. Retrieved 7 April 2017.
- "El 'Abecedario' del fútbol: Guillermo Gorostiza, la bala roja de San Mamés" [Football's 'ABC': Guillermo Gorostiza, the red bullet of San Mamés] (in Spanish). Fútbol Primera. 12 March 2012. Retrieved 7 April 2017.
- "Feliz aniversario, campeón" [Happy anniversary, champion] (in Spanish). El Desmarque. 28 April 2015. Retrieved 7 April 2017.
- "Victorio Unamuno, un goleador de verdad" [Victorio Unamuno, a true scorer]. Marca (in Spanish). 22 October 2016. Retrieved 7 April 2017.
- "Spain – List of Topscorers ("Pichichi") 1929–2015". RSSSF. Archived from the original on 4 March 2016. Retrieved 7 April 2017.