The Blue Bulls, for sponsorship reasons named Vodacom Blue Bulls, or more popularly by the club's Afrikaans name Die Blou Bulle, are a South African rugby union team that participates in the annual Currie Cup tournament. They are governed by the Blue Bulls Rugby Union and are based at Loftus Versfeld Stadium in Pretoria, Gauteng province.

From its first year of existence Northern Transvaal was a formidable force in South African rugby, with many Springboks rising through their ranks. During World War II there were no local rugby competitions and they first lifted the Currie Cup only in 1946. Eventually the side was nickamed the Blue Bulls, a name that has stuck with them ever since.

The Northern Transvaal Rugby Union became the Blue Bulls Rugby Union, and Northern Transvaal became known only by their original nickname: the Blue Bulls. When Vodacom became the team's biggest sponsor their name was also added: previously the side was sponsored by ExxonMobil and known as the Mobil Blue Bulls.