Myles Birket Foster was a British illustrator, watercolourist and engraver in the Victorian period. His name is also to be found as Myles Birkett Foster.
Foster was born in North Shields, England of a primarily Quaker family, but his family moved south to London in 1830, where his father founded M. B. Foster & sons — a successful beer-bottling company. He was schooled at Hitchin, Hertfordshire and on leaving initially went into his father's business. However, noticing his talent for art, his father secured an apprenticeship with the wood-engraver, Ebenezer Landells, where he worked on illustrations for Punch magazine and the Illustrated London News.

Birket Foster travelled widely, painting the countryside around Scotland, the Rhine Valley, the Swiss lakes and in Italy, especially Venice.

Although he had painted great numbers of landscape scenes from Scotland to the Mediterranean, it was after moving to Witley that Birket Foster produced the works for which he is best known—a sentimentalised view of the contemporary English countryside, particularly in the west Surrey area. Although criticised for their idealised view of rural life, they were recognised for their detail and execution. Birket Foster's work (along with that of other artists) was used by Cadburys, the chocolate manufacturer, on the cover of their chocolate boxes from the 1860s onwards.