Ignacio María Agirrezabala Ibarbia, nicknamed Chirri II (10 May 1909 – 11 September 1979) was a Spanish footballer who played as a forward.

[2] Chirri II was an integral part of what became known as the 'first historic front line' of Athletic Bilbao, combining with José Iraragorri, Bata, Guillermo Gorostiza and Lafuente (as well as Víctor Unamuno).

[2][3][4][6][7] He has been characterised as a playmaker whose focus was on the creative and technical aspects of the game, in contrast to most forwards of the era who relied mainly on physical power to overcome opponents.

[2][8] He is said to have initiated the practice of destroying the bowler hat worn by the coach Fred Pentland after victories, which became a regular ritual for the successful team.

[9] He worked in an engineering and construction firm before deciding to return to Bilbao with his family after eight years, where he became a director of a company in the same industry.