POLICE are appealing for help to find a young man who has been missing for almost a fortnight.

Dane Kowalski, 27, drove off from his Diamond Creek home on December 12 and has not been seen since then.

He told his family he was travelling for a week around Leongatha and Wilsons Promontory but police believe Mr Kowalski may have gone to the Northern Territory via South Australia instead.

The athletic 27-year-old is about 185cm and has blue eyes and brown hair.

He left home driving a white 2004 Holden Rodeo ute with the registration WN11.

Anyone who sees Mr Kowalski is urged to call 000 immediately.

tom.minear@news.com.au

Twitter: @tminear