At iProfile, Gregory developed launched . Prior to that he had spells at Yahoo! where he was head of marketing at Yahoo! UK Search. As marketing director he led the re-brand and re-launch of AltaVista across Europe.
He joins the dating site as it celebrates its most successful January on record with a 26% increase in memberships on this time last year and eight of the ten busiest sign-up days of all time.
Greogry will take responsibility for building and implementing strategies to drive acquisition, revenue growth and brand development for the UK market as well as taking control of 's multi-million pound marketing budget.
In addition he will head up business development and continue to build strategic partnerships working alongside Match.com's new business development manager, Carlie Sillett.
Gregory said: "Match.com is an innovative company with a strong, instantly recognisable brand that has successfully made online dating synonymous with finding love.
"Taking the brand forward at such an exciting time for the category is a very attractive opportunity to me."
Jason Stockwood, international managing director of match.com, said: "Karl brings with him a wealth of online brand experience which makes him well placed to further develop match.com's customer base through new and engaging marketing.
"As the leading global dating brand, we are committed to growing our business by delivering customer-focused innovation, and Karl's strong leadership will be absolutely key."
Gregory has over 12 years' practice in traditional and digital marketing across B2B and B2C businesses.
He also has agency experience gained from his time with Mindshare and Ogilvy & Mather.
Match.com recently launched brand its Personality Test 'match insights'.
Designed by Dr Helen Fisher the test claims to bring science to the art of matchmaking to the site and has been completed by over 135,000 people.
Last year Match.com switched its marketing focus to single men with a TV advertising campaign in a bid to drive male subscribers to the site in the six months leading up to Valentine's Day this weekend.