Brennan will report directly to managing director Debbie Smith and will managge client service across the business. She will work across a number of the agency's key clients including Standard Life, which handed its direct marketing account to Meteorite in January.
In her previous role at Iris, Brennan led the Sony UK relationship, since winning the business in January 2006.
Prior to that, she spent five years at OgilvyOne and OgilvyInteractive working with clients including HBOS, Unilever and IDM.
Smith said: "We are delighted to welcome Rebecca on board she brings a wealth of direct and integrated experience, and her focus on existing client's business will ensure we can continue to prioritise clients with business building solutions."
Last month to develop a national diversity and equality campaign for the fire and rescue service, following a four-way pitch.
Meteorite fought off competition from Tequila, TMW and Chemistry to win the business.
Rebecca Brennan
Meteorite poaches Iris board director Rebecca Brennan
LONDON - Meteorite has appointed Rebecca Brennan, a former board director at Iris Nation, as client services director.