| Club: | Rayo Vallecano |
| Season: | 2014–15 |
| Manager: | Paco Jémez |
| Mgrtitle: | Head coach |
| Chairman: | Raúl Martín Presa |
| Chrtitle: | President |
| League: | La Liga |
| League Result: | 11th |
| Cup1: | Copa del Rey |
| Cup1 Result: | Round of 32 |
| Stadium: | Campo de Vallecas |
| League Topscorer: | Alberto Bueno (17) |
| Season Topscorer: | Alberto Bueno (17) |
| Prevseason: | 2013–14 |
| Nextseason: | 2015–16 |
| Pattern La1: | _rayo1415h |
| Pattern B1: | _rayo1415h |
| Pattern Ra1: | _rayo1415h |
| Pattern Sh1: | _rayo1415h |
| Pattern So1: | _redtopl |
| Pattern La2: | _rayo1415a |
| Pattern B2: | _rayo1415a |
| Pattern Ra2: | _rayo1415a |
| Pattern Sh2: | _rayo1415a |
| Pattern So2: | _whitetopl |
| Socks2: | FF0000 |
| Pattern La3: | _rayo1415t |
| Pattern B3: | _rayo1415t |
| Pattern Ra3: | _rayo1415t |
| Pattern Sh3: | _rayo1415t |
| Pattern So3: | _navytopl |
| Socks3: | 64d1ff |
The 2014–15 Rayo Vallecano season is the club's 90th season in its history and its 16th in La Liga.
Updated as of 30 May 2015.[1] [2] |-! colspan=14 style=background:#dcdcdc; text-align:center| Players who have made an appearance or had a squad number this season but have been loaned out or transferred|}
See main article: List of Spanish football transfers summer 2014. In:[3] [4] [5] [6] [7] [8] [9] [10] Out:[11] [12] [13]
See main article: List of Spanish football transfers winter 2014–15.
See main article: 2014–15 La Liga.
Kickoff times are in CET and CEST
See main article: 2014–15 Copa del Rey.