R. White's Lemonade is a British brand of a carbonated lemonade, which is produced and sold in the United Kingdom by Britvic. Robert and Mary White produced the first R. White's lemonade in Camberwell, south London, in 1845. The White Family took over H. D. Rawlings Ltd. in 1891, the year that it was incorporated—a merger which made White's the biggest soft drinks company in London and the south-east—and then R. White & Sons Ltd. was itself incorporated in 1894. The company was taken over by Whitbread in the 1960s, and was later absorbed by Britvic in 1986, when Britvic and Canada Dry Rawlings Ltd merged.

In the 1970s R. White's also made orangeade, dandelion and burdock, and cream soda. The lemonade product, formerly made using sugar, has (as of 2012, possibly earlier) changed the traditional recipe, replacing some sugar with aspartame, saccharin and acesulfame K. R. White's still contains real lemons and is available in regular, diet, Traditional Cloudy, Raspberry, Pear and Elderflower varieties. A television commercial from the 1970s – "Secret Lemonade Drinker" – was ranked seventh in a 2000 UK wide poll of "The 100 Greatest TV Ads".