Reid & Co was a large British brewery based in London.

The business was established in 1757 when Richard Meux and Mungo Murray acquired Jackson's Brewery on Mercer Street. Following a major fire, the Griffin Brewery at Clerkenwell was built in 1763.^[1] Andrew Reid, a wealthy merchant and distiller, became a partner in 1793, and the firm began to trade as Meux Reid & Co.^[1] Production amounted to over 100,000 barrels for the first time in 1795.^[2] The firm was the largest of the London porter breweries in 1807/8.^[3] It began to trade as Reid's Brewery from 1816.^[4]

Reid's was the fourth largest brewer in London in 1853, as measured by the amount of malt used.^[5] The Griffin Brewery was reckoned to be the largest brewery under a single roof in London in 1862.^[5] While Richmond and Turton state that the Reid family's involvement with the firm ended with the death of William Reid in 1867, his son Cecil Frederick Reid was a large shareholder and director.^[6][7]

In 1888 the firm became a limited liability company with a registered capital of £2 million.^[8] Reid merged with rival London brewers Watney and Combe in 1898.^[9] The Griffin Brewery in Clerkenwell was closed.^[9]

The Reid brand name continued to be applied to stout until the 1950s.^[10]