In his new role Greaves will be responsible for the development of the pan-Asian beer brand across all marketing communication channels.
His previous roles in the food and drink sector included brand manager for Ribena at GlaxoSmithKline and also account management roles at Unilever and United Biscuits.
He has also worked as brand director for Lara Croft: Tomb Raider at Eidos and as international brand manager for Lego Star Wars.
Greaves said: "The opportunity to join Tiger was one that I couldn't overlook. The task is to take Tiger Beer to the next level, widening the target audience while at the same time reinforcing the brand's core Asian roots. It's a challenge that I'm going to relish."
Bennett Neo, managing director of Tiger Beer UK, added: "Tiger is delighted to have Steven on board and we look forward to developing an integrated marketing communications strategy."