Johnson said the Games legacy, including the future of the Olympic Park and the continued regeneration of East London, is a top priority as he personally oversees the process as chair of the LLDC Board.
"Securing the future of the Olympic and Paralympic legacy and building on the regeneration of East London is a matter of huge importance to me personally," Johnson said.
"It is vital that I continue to be at the forefront of the decision-making, driving forward the huge task of delivery. The chairmanship of the LLDC will enable me to do just that, building on what has already been achieved."
The former MP for Henley also confirmed the appointment of Daniel Moylan, his aviation advisor and current chair of LLDC, to spearhead a new aviation policy unit with a brief to develop air infrastructure links to benefit business in London and the South East.
"Daniel Moylan is a gifted politician with a superb brain. I've asked Daniel to take on one of the most important challenges of my second term, the vital task of driving our aviation policy," Johnson added.
"London is the heartbeat of the UK's economy. We must remain competitive, and to do that we need a coherent aviation strategy for 21st century London. Daniel Moylan will help me deliver that."