| Period | Name | Country | Birthday | |||
|---|---|---|---|---|---|---|
| Manager | ||||||
| 07/2025 - 06/2027 |  | Ramsés Gil | Ramsés Gil |  | Spain | 28.06.1976 |
| 12/2024 - 06/2025 |  | Albert Carbó | Albert Carbó | | Spain | 08.08.1990 |
| 07/2024 - 12/2024 |  | Mikel Llorente | Mikel Llorente | | Spain | 15.12.1982 |
| 04/2024 - 06/2024 |  | Fran Justo | Fran Justo | | Spain | 24.08.1989 |
| 12/2023 - 04/2024 |  | Iñigo Idiakez | Iñigo Idiakez | | Spain | 08.11.1973 |
| 07/2023 - 12/2023 | | Fran Justo | Fran Justo | | Spain | 24.08.1989 |
| 12/2022 - 03/2023 |  | David Movilla | David Movilla | | Spain | 09.02.1980 |
| 07/2020 - 12/2022 |  | Aitor Zulaika | Aitor Zulaika | | Spain | 26.03.1978 |
| 02/2020 - 06/2020 |  | Gorka Etxeberria | Gorka Etxeberria | | Spain | 26.02.1972 |
| 03/2019 - 02/2020 |  | Alberto Iturralde | Alberto Iturralde | | Spain | 13.08.1968 |
| 07/2018 - 03/2019 |  | Domínguez | Domínguez | | Spain | 29.12.1983 |
| 07/2016 - 07/2018 |  | Asier Santana | Asier Santana | | Spain | 03.02.1979 |
| 07/2014 - 06/2016 | | Aitor Zulaika | Aitor Zulaika | | Spain | 26.03.1978 |
| 07/2013 - 06/2014 |  | Sergio Francisco | Sergio Francisco | | Spain | 19.03.1979 |
| 06/2012 - 06/2013 |  | Idiakez | Idiakez | | Spain | 14.03.1972 |
| 07/2011 - 06/2012 |  | Olabe | Olabe | | Spain | 20.10.1967 |
| 01/2011 - 06/2011 |  | Sola | Sola | | Spain | 29.09.1957 |
| 07/2010 - 06/2011 |  | Álvaro Cervera | Álvaro Cervera | | Spain | 20.09.1965 |
| 07/2007 - 06/2010 |  | Iñaki Alonso | Iñaki Alonso | | Spain | 07.08.1968 |
| 07/2006 - 06/2007 |  | Zubillaga | Zubillaga | | Spain | 12.08.1959 |
| 07/2004 - 06/2006 |  | Manix Mandiola | Manix Mandiola | | Spain | 09.04.1958 |
| 07/2002 - 06/2004 | | Sola | Sola | | Spain | 29.09.1957 |
| 02/2000 - 12/2000 |  | Lacasa | Lacasa | | Spain | 28.07.1947 |
| 02/2000 - 02/2000 |  | Larrain | Larrain | | Spain | 13.09.1953 |
| 11/1999 - 01/2000 |  | Eizmendi | Eizmendi | | Spain | 29.08.1960 |
| 10/1999 - 11/1999 | | Larrain | Larrain | | Spain | 13.09.1953 |
| 02/1998 - 06/1998 | | Larrain | Larrain | | Spain | 13.09.1953 |
| 07/1994 - 06/1997 |  | Gonzalo Arconada | Gonzalo Arconada | | Spain | 23.07.1961 |
| 12/1964 - 06/1965 |  | Santiago Vázquez | Santiago Vázquez | | Spain | 02.03.1924 |
| 07/1923 - 06/1925 |  | Steve Bloomer | S. Bloomer |  | England | 20.01.1874 † |
| Ass. Coach | ||||||
| 07/2012 - 06/2013 | | Sergio Francisco | Sergio Francisco | | Spain | 19.03.1979 |
| 06/2011 - 05/2012 |  | Antía | Antía | | Spain | 13.02.1973 |
| Goalkeeper Coach | ||||||
| 07/2004 - 06/2007 |  | Iñigo Arteaga | Iñigo Arteaga | | Spain | 16.12.1972 |
Real Unión