Sybella Mary Crawley-Boevey (1851-1911) was an English novelist.
Sybella Mary Crawley-Boevey was born in 1851 at Flaxley Abbey, Gloucestershire, the youngest daughter of Sir Martin Hyde Crawley-Boevey, 4th Baronet. She is the sister of author and civil servant Arthur William Crawley Boevey and the cousin of famous Victorian author Charlotte Mary Yonge.
In 1888, Crawley-Boevey wrote Dene Forest Sketches (1888), a study about the Forest of Dean where her father was the verderer. She followed this with two novels: the mystical-themed Beyond Cloudland (1888) and the love story Conscience Makes the Martyr (1894)