Claude Hermann Walter Johns (20 February 1857 – 20 August 1920) was an Assyriologist and Church of England clergyman.

Johns was ordered deacon in 1887 and ordained priest in the following year, and from 1887 until 1892 was tutor in St Peter's Training College for Schoolmasters, Peterborough, as well as curate of St Botolph's, Helpston (1887–88), and of St John's, Peterborough (1888–91).

In 1892 Johns became rector of St Botolph's Church, Cambridge.

He had taken up the study of cuneiform, encouraged by Sandford Arthur Strong, and from 1897 was lecturer in Assyriology at Cambridge University, as well as in Assyrian at King's College, London, from 1904.

He died at his home, Rathmines, Barnes Close, Winchester on 20 August 1920, and was buried on 24 August at St Mary's Churchyard, Twyford, Hampshire.