Montxu Miranda Díez (born 27 December 1976 in Santurce) is a Spanish pole vaulter. His personal best of 5.81 metres, achieved in September 2000 in Barcelona, is still the standing Spanish national record .
| Representing | ||||||
|---|---|---|---|---|---|---|
| 1994 | World Junior Championships | Lisbon, Portugal | 18th (q) | Pole vault | 4.80 m | |
| 1995 | European Junior Championships | Nyíregyháza, Hungary | 9th | Pole vault | 5.00 m | |
| 1997 | Paris, France | 17th (q) | Pole vault | 5.30 m | ||
| European U23 Championships | Turku, Finland | 2nd | Pole vault | 5.50 m | ||
| Mediterranean Games | Bari, Italy | 5th | Pole vault | 5.30 m | ||
| 1998 | Valencia, Spain | 4th | Pole vault | 5.70 m | ||
| Ibero American Championships | Lisbon, Portugal | 1st | Pole vault | 5.60 m (CR) | ||
| 1999 | Seville, Spain | 11th (q) | Pole vault | 5.65 m | ||
| 2000 | Ghent, Belgium | – | Pole vault | NM | ||
| Sydney, Australia | 9th | Pole vault | 5.70 m | |||
| 2001 | Lisbon, Portugal | 6th | Pole vault | 5.70 m | ||
| Edmonton, Canada | 17th (q) | Pole vault | 5.60 m | |||
| 2002 | Vienna, Austria | – | Pole vault | NM | ||