Twelve national teams competed in the men's Olympic field hockey tournament at the 2012 Summer Olympics in London. Sixteen players were officially enrolled in each squad. Two reserve players could also be nominated to be available should a player enrolled in the official squad become injured during the tournament.
The following is the Australian roster in the men's field hockey tournament of the 2012 Summer Olympics.[1]
Head Coach: Ric Charlesworth
Reserves:
The following is the Great Britain roster in the men's field hockey tournament of the 2012 Summer Olympics.[2]
Head Coach: Jason Lee
Reserves:
The following is the Spain roster in the men's field hockey tournament of the 2012 Summer Olympics.[3]
Head Coach: Dani Martín
The following is the Pakistan roster in the men's field hockey tournament of the 2012 Summer Olympics.[4]
Head Coach: Akhtar Rasool
Reserves:
The following is the Argentina roster in the men's field hockey tournament of the 2012 Summer Olympics.[5]
Head Coach: Pablo Lombi
Reserves:
The following is the South African roster in the men's field hockey tournament of the 2012 Summer Olympics.[6]
Head Coach: Gregg Clark
Reserves:
The following is the Germany roster in the men's field hockey tournament of the 2012 Summer Olympics.[7]
Head Coach: Markus Weise
Reserves:
The following is the Netherlands roster in the men's field hockey tournament of the 2012 Summer Olympics.[8]
Head Coach: Paul van Ass
Reserves:
The following is the South Korea roster in the men's field hockey tournament of the 2012 Summer Olympics.[9]
Head Coach: Cho Myung-jun
Reserves:
The following is the New Zealand roster in the men's field hockey tournament of the 2012 Summer Olympics.[10]
Head Coach: Shane McLeod
Reserves:
The following was the Indian roster in the men's field hockey tournament of the 2012 Summer Olympics.[11]
Head Coach: Michael Nobbs
Reserves:
The following is the Belgium roster in the men's field hockey tournament of the 2012 Summer Olympics.[12]
Head Coach: Colin Batch
Reserves: