Robert I or Robert of Nostell (died 1160) was a 12th-century Anglo-Norman Augustinian churchman, the first prior of St Andrews. Robert came to the Kingdom of Scotland from Nostell Priory as head of a group of Nostell canons establishing St Andrews Cathedral Priory. He had been invited by Robert, Bishop of St Andrews, himself an ex-member of Nostell. Robert was probably established at St Andrews in 1140, but certainly by 14 May 1144. Robert had come directly from Nostell, not via Scone Abbey.