| Milagros Arruela | |
| Fullname: | Milagros Nataly Arruela Patiño |
| Birth Date: | 1992 10, df=yes[1] |
| Birth Place: | Lima, Peru |
| Height: | 1.65 m[2] |
| Position: | Defender |
| Clubs1: | Real Maracaná |
| Clubs2: | El Agustino |
| Nationalyears1: | 2014–2018 |
| Nationalteam1: | Peru |
| Nationalcaps1: | 6 |
| Nationalgoals1: | 0 |
| Ntupdate: | 12 April 2018 |
Milagros Nataly Arruela Patiño (born 11 October 1992) is a Peruvian footballer who plays as a defender. She was a member of the Peru women's national team. She is also a referee.
Arruela played for Peru at senior level in two Copa América Femenina editions (2014 and 2018). She appeared at the 2019 Pan American Games as a referee and a fourth official.