His Royal Highness is a 1932 Australian musical film directed by F.W. Thring, also known as His Loyal Highness (Australia alternative title and title in the United Kingdom), starring George Wallace in his feature film debut.

Solicitor James Lord is in love with Nellie. She tells him she is going away for a week with her friend May to Portsea where there are many nice boys. Nellie gets the dates wrong and goes a day early. When James finds out he worries she is cheating on him. His client Rouse comes in and says he is convinced his wife is cheating on him a man called Dane. They hire three private eyes from Sleath's Detective Agency, Hall, Ratchet and Moon, to keep an eye on women.