|Full name||Fabio Renán Ulloa Castillo|
|Date of birth||20 August 1976|
|Place of birth||Tela, Honduras|
|Height||1.81 m (5 ft 11 1⁄2 in)|
|Playing position||Centre back|
|* Senior club appearances and goals counted for the domestic league only.
Ulloa has played professionally for Olimpia, and has won seven national championships. In 2001, he was jailed after being accused of raping a young woman in his apartment. He was only released after 6 days after charges against him were dropped.
He has won a Salvadoran Clausura championship with Águila in 2006, after joining them in summer 2005. After a year he looked to leave them for Marathón but ended up with Motagua. He however returned to Aguila within a month.
On 8 August 2010, Ulloa made his debut in the Liga Nacional de Futbol de Honduras with Necaxa against Motagua in a 3-0 win, and scored his first goal on 24 October 2010 against Deportes Savio in a 1-2 defeat. He left them for Savio in 2012.
He made his senior debut for Honduras in a May 1994 Miami Cup against El Salvador and has earned a total of 10 caps, scoring no goals. He has represented his country at the 1997 UNCAF Nations Cup.
- Retiran cargos por violación a jugador del Olimpia de Honduras - Nación (Spanish)
- Fabio Ulloa firmó con Águila - El Diario de Hoy (Spanish)
- Fabio Ulloa se desahogó - El Diario de Hoy (Spanish)
- Así están a diez días - El Diario de Hoy (Spanish)
- El regreso del capi - El Diario de Hoy (Spanish)
- Real Juventud inscribe su renovado plantel - La Tribuna (Spanish)
- Deportes Savio frenó al Necaxa 2-1
- Fabio Ulloa, nuevo fichaje del Deportes Savio - Diez (Spanish)
- Fabio Ulloa – FIFA competition record
- UNCAF Tournament 1997 - RSSSF