There were several saints named Saturninus.
- Saint Saturninus was a martyr who was put to death in Cagliari, Sardinia, during the persecutions of Emperor Diocletian. His Acts record that he was beheaded during the festival of Jupiter in 303 AD. His feast day is October 30th.
- Another Saint Saturninus was martyred in Alexandria during Diocletian's persecutions in 304.
- Saturninus of Toulouse became the first bishop of Toulouse, France when he was sent there by Pope Fabian in 251 AD.
- One of the Scillitan Martyrs.
- The name of two saints martyred at Albitina in 304 AD (see Victoria of Albitina).
