Jack Guinness is a model and fashion influencer.

Jack studied English Literature at Cambridge University. Upon graduating he trained and as an actor and then embarked on a modelling career appearing in international campaigns for brands such as Dunhill, Brioni and L’Oreal. He is a member of the advisory Style Council for London Fashion Week Men's and works with the British Fashion Council to champion young designers and British manufacturing. 

As a style and fashion commentator, he has contributed to Italian Vogue, The Guardian, GQ, Gentleman's Journal and Tatler. As creative director, Jack worked with consultant Rose Forde to create a special issue of Flaunt Magazine: acting as London Content Director and commissioning product to celebrate the launch from designers Bella Freud and Lulu Guinness. Three covers featured Beyonce, Lily James and Pamela Anderson shot by David LaChapelle. Issue content had a potential reach of over 47 million user on Instagram alone.

Jack has helped create and featured in digital content for GucciVogue, Vice and GQ, and travelled to Japan to star in Channel 4's anarchic World Of Weird series.

Jack is represented by Next Management.