Evans has previously worked in senior sales positions for Q Hotels, Edinburgh International Convention Centre and Manchester Central over the past 11 years.
He was most recently director of association sales at Q Hotels and, prior to that, Evans worked in international association sales and business development at Edinburgh International Convention Centre.
Evans also spent almost five years working as corporate sales manager at Manchester Central.
Definitive Events managing director Lisa Pennington said: "Adrian is well seasoned in live events, making him able to hit the ground running. He has a proven track record in sales across the sectors and has already identified opportunities to pursue."
The Manchester-based agency has been added to Indesit Company’s events roster, and last year launched a specialist sports division to tap into opportunities arising from major events such as the London 2012 Olympic Games.