Mark Opitz is an Australian record producer and audio engineer who has produced AC/DC, Australian Crawl plus other distinguished bands. He has won numerous awards for his work.

Mark Opitz was born in Melbourne. After his parents separated, Mark was cared for by his mother. The family relocated to Brisbane and his parents reconciled. However, after his parents again separated, Mark was put into in foster care before being left at the Margaret Marr Memorial Home for Boys, a Methodist home that ran from 1924 until 1973.

Mark Optiz moved to Sydney after he left the Home for Boys and began his career with the Australian Broadcasting Commission (ABC) IN 1971.