Lloyd will be responsible for the creative output of the entire agency, working across a client base that includes BT, James Villa Holidays, Avis, Legal & General, Flexicover and the Direct Marketing Association UK.
Prior to Craik Jones, Lloyd worked at CDP, DDB and Redwood, producing work for clients including Diageo, Unilever, Orange, Nokia, Gap, Boots, M&S, Sky and Kodak.
Lloyd said: "Crayon has a great client list and its recent BT win really underlines the quality of the work that the agency produces.
"I'm really pleased to be joining an agency with such a diverse and interesting client list and look forward to producing even more fantastic creative work in the future."
Simone Sulsh, partner at Crayon, said: "Securing someone like Jon has been a great coup for us. He has fantastic digital and integrated experience and has built and managed teams at several leading agencies, as well as producing award-winning work across major clients."