| Quincoces | |
| Fullname: | Juan Carlos Díaz Quincoces |
| Birth Date: | 26 January 1933 |
| Birth Place: | Vitoria-Gasteiz, Spain |
| Height: | 1.82 m |
| Position: | Defender |
| Years1: | 1952–1954 |
| Clubs1: | CD Mestalla |
| Caps1: | 59 |
| Goals1: | 0 |
| Years2: | 1953–1964 |
| Clubs2: | Valencia |
| Caps2: | 223 |
| Goals2: | 1 |
| Years3: | 1964–1966 |
| Clubs3: | Real Murcia |
| Caps3: | 56 |
| Goals3: | 0 |
| Years4: | 1966–1967 |
| Clubs4: | Alavés |
| Totalcaps: | 338 |
| Totalgoals: | 1 |
| Nationalteam1: | Spain |
| Nationalyears1: | 1957–1959 |
| Nationalcaps1: | 8 |
| Nationalgoals1: | 0 |
Juan Carlos Díaz Quincoces (26 January 1933 - 28 November 2002), known as just Quincoces, was a Spanish footballer who played as a defender.[1] He made eight appearances for the Spain national team from 1957 to 1959.[2]
His uncle Jacinto Quincoces was also a professional footballer and a Spanish international as well as a prominent coach, with Juan Carlos usually referred to by his maternal surname - and as 'Quincoces II' - in recognition of his famous relative (conventionally the paternal surname Díaz would have been used). They worked together at Valencia as coach and player in two spells.[3]