Paula Jessica Ostiz Taco (born 12 January 2007) is a Spanish cyclist who specializes in road events. She was runner-up in the Junior World Championships road race in 2024. In August 2025, she will join UCI Women's WorldTeam as a stagiaire before joining full-time in 2026.
Career.
Ostiz participated in cycling during the 2022 European Youth Olympic Festival in Banská Bystrica, and won silver in the time trial and road race in the girls' class, finishing in both events behind Cat Ferguson.
In June 2024, Ostiz won the junior national title in the Spanish National Road Race and Time Trial Championships. On 11 September 2024, Ostiz won the junior time trial at the 2024 European Road Championships in Limburg, Belgium, and two days later, she signed with UCI Women's WorldTeam in 2025 as a stagiaire before becoming a full-time professional the following year, signing a contract until 2028. Later that month, she was runner-up in the junior road race at the 2024 UCI Road World Championships in Zurich, finishing behind Cat Ferguson.
 European Junior Road Championships
1st Time trial
6th Road race
 National Junior Road Championships
1st Road race
1st Time trial
 1st Overall Watersley Ladies Challenge
1st Young rider classification
 1st GP Cantabria Deporte
 1st Campeonato Navarro - ITT
 1st Stages 1 (ITT) & 3 Lea Artibai Txallengea
 UCI World Junior Road Championships
2nd Road race
7th Time trial
 9th Ronde van Vlaanderen Juniors
 2nd Clásica de Jaén Nation's Cup Women