Percy Cunningham Mather (Chinese: 马尔昌; 9 December 1882 – 24 May 1933) was a pioneer British Protestant Christian missionary to China, the second China Inland Mission missionary to Xinjiang. Mather was born in Fleetwood, Lancashire, England in 1884, the son of a railway employee and an Irish nurse. Mather went into railway service like his father. In 1903 he was converted to Christianity through the ministry of J. H. Doddrell of the Wesleyan Methodist Church. Mather soon became a Sunday school teacher and local preacher. While his ordination was delayed, he learned about the China Inland Mission (CIM) and decided to go to China after assisting his sister financially to get an education.