Obadiah Sedgwick (1600–1658) was a Puritan preacher and theologian, and a member of the Westminster assembly. He was the son of Joseph Sedgwick, vicar of St. Peter’s, and then of Ogbourne St. Andrew. Sedgwick matriculated at Queen’s College, Oxford, in June 1619 and then moved to Magdalen Hall, where he graduated with a BA, and earned his MA in 1623.
Sedgwick was vicar of Coggeshell, Essex before John Owen succeeded him upon Sedgwick’s appointment to St. Paul’s, Covent Garden. In his last years he was a member of the 11th London classis in the parliamentary presbyterian system and a trier under Oliver Cromwell, helping direct the reform of parish worship during the brief reign of the Lord Protector.