| Club: | Real Betis |
| Season: | 1999–2000 |
| Chrtitle: | President |
| Chairman: | Manuel Ruiz de Lopera |
| Mgrtitle: | Head coach |
| Manager: | Carlos Timoteo Griguol (until 31 January) Guus Hiddink (from 1 February until 1 May)[1] Faruk Hadžibegić (from 2 May) |
| Stadium: | Estadio Manuel Ruiz de Lopera |
| League: | La Liga |
| League Result: | 18th (relegated) |
| Cup1: | Copa del Rey |
| Cup1 Result: | Second round |
| League Topscorer: | Alfonso Pérez (10) |
| Season Topscorer: | Alfonso Pérez (10)[2] |
| Largest Win: | Valladolid 0–3 Real Betis |
| Largest Loss: | Celta Vigo 5–1 Real Betis |
| Prevseason: | 1998–99 |
| Nextseason: | 2000–01 |
The 1999–2000 Real Betis season was the club's 93rd season in existence and its sixth consecutive season in the top flight of Spanish football. In addition to the domestic league, Real Betis participated in this season's edition of the Copa del Rey. The season covered the period from 1 July 1999 to 30 June 2000.
Betis finished in the 18th place to return to the second division after six years.[3]
Real Betis played one pre-season match against Celta, which ended in a 2–1 loss.[4]
See main article: 1999–2000 La Liga.
Source: [5]
See main article: 1999–2000 Copa del Rey.