Percy Faraday Frankland CBE FRS (3 October 1858 – 28 October 1946) was a British chemist.
He was the son of chemist Edward Frankland and Michael Faraday was his godfather.
Percy Frankland was Demonstrator and Lecturer in Chemistry at the Royal School of Mines (1880–1888), Professor of Chemistry at University College, Dundee (now University of Dundee) (1888–1894) and Professor of Chemistry at Mason Science College (which later became Birmingham University) (1894–1919). He applied bacteriology to water analysis and studied the chemical aspects of fermentation. He was elected a Fellow of the Royal Society in June 1891. He was President of the Chemical Society from 1911 to 1913, a position his father had held before him.
In 1882 Frankland married Grace (née Toynbee), the daughter of Joseph Toynbee. She worked with both Percy and his father and was described at the time as having "worthily aided and seconded [Percy]". The couple co-authored papers on bacteria and other microorganisms found in the air and water.
Frankland received an honorary doctorate (LL.D.) from the University of St Andrews in February 1902. He was awarded a CBE in 1920 and elected a Fellow of the Royal Society.
Frankland died in 1946 at Loch Awe in Argyllshire, Scotland.
Some archival material relating to him is held by Archive Services, University of Dundee.