Bernard Percival Peiris, OBE, JP (29 March 1908 – 18 January 1977) was a Sri Lankan lawyer.
de Silva of Galle and had a daughter Kamala who married Dr Cecil Dharamarajah Chelliah.
In 1946 based on the finding of Soulbury Commission and advice of Sir Ivor Jennings, D. S. Senanayake Vice President of the Board of Ministers asked Peiris then Second Assistant Legal Draftsmen to draft constitution to be-used for Ceylon's Independence.
The Ceylon Order in Council along with relevant supportive legislation were drafted by Peiris by 1946 and reviewed by Sir Robart Drayton, Chief Secretary and J.H.B.
The draft was approved by Senanayake and Jennings, after which it was sent to the Colonial Office in London, who added only a single line to protect British share holders in the island.