Reginald George Haggar (1905–1988), R.I., A.R.C.A., F.R.S.A., was a British ceramic designer.
In 1929, he became an assistant designer at Mintons Pottery in Stoke-on-Trent, rising to art director six months later, a post he held until 1939.
Working in watercolors and ceramics, his designs reflected both the radical and lyrical elements of the Art Deco style.
He painted many pictures of the North Staffordshire area.
An annual ceramics lecture has been held in his memory each year called the Reginald Haggar Memorial Lecture, given these days at The Potteries Museum & Art Gallery.