Michael Kelly (13 February 1850 – 8 March 1940) was an Irish-born Roman Catholic bishop who became the fourth Archbishop of Sydney.

Kelly served on the staff of the House of Missions, Wexford and was made vice-rector of the Irish College in Rome in 1891.

Elected Archbishop of Achrida In Partibus Infidelium and coadjutor cum jure successionis of Sydney on 20 July 1901, Kelly received episcopal consecration as coadjutor archbishop on 15 August 1901 at St Joachim's Church, Rome, by Cardinal Francesco Satolli.

[3] He took a less belligerent attitude to sectarian tensions and political questions such as Irish affairs than Archbishop Mannix of Melbourne.

[5] In recognition of his extensive service to the church, Kelly was named Assistant to the papal throne, associated with the title Roman count, on 25 June 1926.