Herrarnas spelartrupper i landhockey vid olympiska sommarspelen 2012 bestod av tolv nationer.
Coach: Ric Charlesworth
Reserver:
Coach: Jason Lee
Coach: Dani Martín
Coach: Akhtar Rasool
Coach: Pablo Lombi
Coach: Gregg Clark
Coach: Markus Weise
Coach: Paul van Ass
Coach: Cho Myung-Jun
Coach: Shane McLeod
Coach: Michael Nobbs
Coach: Colin Batch