22 sets of siblings competing in the Tokyo Olympics together

Sisters Nelly and Jessica Korda are both headed to Tokyo as members of the US Olympic women's golf team.

Nelly won the Women's PGA Championship and is ranked the No. 1 golfer in the world. Jessica is ranked at No. 13.

Sisters Makenzie and Aria Fischer will compete in their second Olympics together as part of the US women's water polo team.

The Fischer sisters won gold at the Rio Olympics in 2016.

Kristie and Sam Mewis are the first sisters to ever be named to the US Olympic women's soccer team.

The Mewis sisters grew up in Hanson, Massachusetts, and are both members of the US national women's soccer team.

""I feel like the only thing that could have made me making it better was that Kristie made it too," Sam told People magazine.

Kelly and Courtney Hurley will compete as individuals and members of the US fencing women's epee team.

Kelley has competed at the Olympics four times and won both an individual and a team bronze medal. Courtney is a three-time Olympian and won a team bronze medal alongside her sister in 2012.

Erik and Kawika Shoji are returning to the US men's Olympic indoor volleyball team a second time.

The team won a bronze medal at the Rio Olympics in 2016.

Twins Jennifer and Jessica Gadirova are both members of Great Britain's women's gymnastics team.

The 16-year-olds are known for their floor routine prowess.

Tiffany Porter and Cindy Sember compete against each other in hurdling for Great Britain.

The sisters also competed against each other in Rio, where Sember placed fourth and Porter placed seventh.

"We're competitors so my goal is always to beat her like everyone else, but I of course want her to do well, too — I'm so proud of her returning so well," Sember told BBC.

Jodie and Hannah Williams will race together in track and field events for Great Britain.

Both sisters will race in the 4x400 meter relay, and Jodie will also race in the women's 400 meter dash.

In the men's road race, identical twin cyclists Adam and Simon Yates will race for Great Britain.

The easiest way to tell the identical twins apart is their teeth — Adam's front teeth are straight, while Simon's are angled. Adam also has a scar on his chin, while Adam does not.

Hockey players Harry and Hannah Martin will play on Great Britain's teams.

Hannah will compete in women's hockey, while two-time Olympian Harry will play on the men's team.

Mathilda and Charlotte Hodgkins-Byrne are both members of Great Britain's women's rowing team.

The sisters will join rowing teammates Jess Leyden and Melissa Wilson at the Olympics.

British rowers Emily and Tom Ford will compete in the women's and men's eights.

"The Olympic Games brings everyone together and to know that we're going to be a part of that is something very special," Tom told ITV. "To be going with a sibling makes it even more special because it's something we've both dreamed of growing up."

Swimmers Max and Joe Litchfield will represent Great Britain.

Max placed fourth in the 2016 400 meter medley. This will be Joe's first Olympics.

Twins Pat and Luke McCormack are members of Great Britain's boxing team.

Pat also competed in Rio in 2016.

"It's unbelievable – I went by myself last time, and it's time for the twins to take over Tokyo," he told The Northern Echo.

Swimmers Jayla and Troy Pina will both represent Cape Verde at the Tokyo Olympics.

The Pina siblings live in Seekonk, Massachusetts, but will represent the African country of Cape Verde on its first-ever swimming team.

Pau and Marc Gasol will play for Spain's Olympic men's basketball team.

The brothers are three-time Olympians, having won bronze in 2016 and silver in 2012 and 2008 with Spain's basketball team.

Anna-Maria and Eirini Alexandri are back for a second Olympics together, representing Austria in women's duets synchronized swimming.

The Alexandri sisters placed 12th in Rio in 2016.

Twins Laura and Charlotte Tremble of France will compete in synchronized swimming.

"It's amazing to swim with Laura because when we swim together, we are connected," Charlotte told FINA Aquatics World Magazine in 2019.

Croatia's Sime and Mihovil Fantela will sail together in the 49ers class.

The duo is nicknamed "Golden Brothers Fantela." Tokyo will be Sime's fourth Olympics, having won a gold medal in 2016. It will be younger brother Mihovil's first Olympics.

Bronte and Cate Campbell will represent Australia in swimming.

Bronte qualified to compete in two relays, Cate will swim in the 50 and 100-meter freestyle, and they'll both join team Australia for the 4x100 free relay.

Twin sisters Sanne and Lieke Wevers are returning to the Olympics on the Netherlands' gymnastics team.

Sanne won a gold medal in balance beam in Rio in 2016.

Ates and Deniz Cinar of Turkey will compete in sailing in the 470 class.

The Cinar brothers also sailed together in the 2008, 2012, and 2016 Olympics.