The Men's 100 metres T34 event for the 2012 Summer Paralympics took place at the London Olympic Stadium on 8 September.

Athletes in this category have minimal limitations or control problems in their arms and trunk while pushing a wheelchair.

Prior to the competition, the existing World and Paralympic records were as follows.

Ahmad Almutairi of Kuwait, classified T33, competed in this event as there was no T33 competition.

Although he set a World Record (for his classification) of 17.67s in the heats, he failed to reach the final.