William Blackmore may refer to:

• William Blackmore (minister), ejected minister
• William Henry Blackmore (1827–1878), English lawyer who gained a fortune by exploiting a large social network as an investment promoter

• Church of St Cross, Clayton
• Church of St Cross, Manchester
• Church of St Cross, Middleton
• Church of St Cuthbert
• Church of St. Cuthbert
• Church of St Cuthbert by the Forest
• Church of St. Cuthbert by the Forest
• Church of St Cuthbert, Crayke
• Church of St. Cuthbert, Crayke
• Church of St. Cuthbert, Darwen
• Church of St Cuthbert, Darwen
• Church of St. Cuthbert, Edenhall
• Church of St Cuthbert, Edenhall
• Church of St Cuthbert, Halsall
• Church of St. Cuthbert, Halsall
• Church of St. Cuthbert, Lytham
• Church of St Cuthbert, Lytham
• Church of St Cuthbert, Over Kellet
• Church of St. Cuthbert, Over Kellet
• Church of St Cuthbert, Redmarshall
• Church of St. Cuthbert, Redmarshall
• Church of St Cyriac and St Julitta, Swaffham Prior
• Church of St. Cyriac and St. Julitta, Swaffham Prior
• Church of St. Cyriakus
• Church of St. David