Today's Australia vs South Africa one-day international cricket match had a special significance for 34 members of the crowd, who became Australian citizens during a special citizenship ceremony held at Optus Stadium before the match.

Minister for Human Services and Digital Transformation Michael Keenan presided over the citizenship ceremony and said it was a privilege to welcome the new Australians.

"Australians should be proud of their citizenship—it means having a stake in our future as a prosperous and diverse nation, and in the fundamental values that underpin our society," Mr Keenan said.

Minister for Immigration, Citizenship and Multicultural Affairs David Coleman said the special ceremony was part of ongoing celebrations for the 70th anniversary of Australian citizenship.

He said a commemorative $1 coin designed to celebrate the 70th anniversary was produced at the Perth Mint and used in the coin toss at the start of the match, making today's ceremony extra special.

"Australia is the most successful multicultural country in the world, welcoming more than five million new citizens to our shores since 1949," Mr Coleman said.

"In recognition of this milestone, special citizenship ceremonies like today's are being hosted around the country.

"A commemorative $1 coin designed to celebrate the 70th anniversary was produced at the Perth Mint and used in the coin toss at the start of the match, making today's ceremony extra special."

Cricket Australia Chief Executive Officer Kevin Roberts congratulated Australia's newest citizens who became citizens in a truly iconic way.

"We hope this experience today inspires our new citizens to play, watch and follow cricket, and maybe one day don a baggy green," Mr Roberts said.

Celebrations to mark the 70th anniversary will continue until 3 February 2019, 70 years after the first Australian citizenship ceremony in 1949.

For more information about 70th anniversary celebrations visit www.citizenship.gov.au.