John Richard 'Jackie' Lomax (10 May 1944 – 15 September 2013) was an English guitarist and singer-songwriter, best known for his association with George Harrison and Eric Clapton. Born in Wallasey, Cheshire, England, he later resided in Ojai, California, United States, with his wife, Annie (previously Norma Richardson), mother of fashion photographer Terry Richardson.

Lomax was a member of Dee and the Dynamites, The Undertakers, The Lomax Alliance, Heavy Jelly and Badger. He worked with The Tea Bags, George Harrison, Eric Clapton, Jeff Beck, Leon Russell and Nicky Hopkins.