Unió Esportiva Santboiana is a professional Spanish rugby union club.

The club are based in Sant Boi de Llobregat in Catalonia, considered to be one of the capitals of Spanish rugby.

Santboiana are the former club of Sant Boi de Llobregat native Oriol Ripol, who is among Spain's most successful rugby players.

Note: Flags indicate national union under World Rugby eligibility rules.

UE Santboiana plays its home matches at Estadi Baldiri Aleu, which has a capacity of 4,000 spectators.