Pistorius is known as the 'Blade Runner' because of the prosthetic carbon fibre limbs he runs with. He was cleared to compete against able-bodied athletes in 2008 when an IAAF ruling that his blades gave him an unfair advantage was overturned by the Court of Arbitration for Sport (CAS).
Pistorius will also compete at the Paralympic Games in London in the 100m, 200m, 400m and 4x100m relay.
"I have a phenomenal team behind me who have helped get me here and I, along with them, will now put everything we can into the final few weeks of preparations before the Olympic Games where I am aiming to race well, work well through the rounds, post good times and maybe even a personal best time on the biggest stage of them all," added Pistorius.
"I am also hugely excited to then be competing to defend my three Paralympic titles at the Paralympic Games.
"I believe we will see some amazing times posted and I am very much looking forward to what will be an incredible Olympics and Paralympics in London."
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