Gay marriage campaigners hope the nomination of the first openly gay US Ambassador to Australia brings the issue of same sex marriage back to the political fore.

Former director of the Office of Personnel Management John Berry was nominated for the position as part of 15 new key administration posts announced by US President Barack last week.

John Berry ... nominated to be the United States' ambassador to Australia. Photo: Director of the Office of Personnel Management

The nomination of Mr Berry, who became the highest ranking openly gay official in US history four years ago, is subject to confirmation by the Senate.

Serving US Ambassador Jeffrey Bleich welcomed the announcement, telling Fairfax Media he was delighted with President Obama’s choice.