London 2012 medallists Natasha Baker and Louis Smith have updated their Twitter profiles with their new titles.
They were formally presented with their honours by the Queen earlier today.
Louis Smith has tweeted this photo of himself "chilling" with his MBE:
Olympic gymnast Louis Smith has tweeted about being awarded with an MBE this afternoon.
Sophie Hosking, from Wimbledon, was also awarded an MBE for services to rowing.
The athlete, who won gold in the Lightweight Women's Double Scull at London 2012, learned to row at school in Kingston and now trains at the London Rowing Club in Putney.
Paralympic champion Natasha Baker almost didn't make it in time to receive her MBE this morning.
She tweeted from her car on the M4, panicking about the traffic. But thankfully she got to Buckingham Palace in time to receive her gong from the Queen.
The Olympic gymnast Louis Smith has received his Member of the British Empire (MBE) medal in an investiture ceremony at Buckingham Palace.
Olympian Louis Smith, who scooped silver on the pommel horse at London 2012, has described being awarded the MBE as the proudest moment of his life.
The gymnast, who also won a bronze in the men's team competition at the London Games, trains in Basildon in Essex.
Olympic silver-medallist Louis Smith has revealed on Twitter that he turned up at Buckingham Palace without his invitation.
The gymnast, who trains in Basildon in Essex, blamed his manager for forgetting it.
Smith will be presented with an MBE today.
Para-Equestrian Natasha Baker from Uxbridge in West London, will head to Buckingham Palace later today to receive an MBE.
She will be joined by Olympic gymnast Louis Smith, London-based rower and gold medallist Sophie Hosking and Deborah Hale, who masterminded the Olympic torch relay.
Natasha, who won two gold medals in dressage events in the Paralympic Games last summer, updated her website to say "excited is an understatement", ahead of her trip to the palace.
After winning a silver and bronze medal in the London 2012 Olympics, he said being chosen for the honour was the proudest moment of his life.
Following the Olympics, Smith won BBC dance series Strictly Come Dancing.