Magnum opus (disambiguation)
- Complex (magazine)
- Great Work (Hermeticism)
- James Wallis (games designer)
- John Longhurst
- Leftoverture
- Lewis (TV series)
- Leæther Strip
- List of Australian films of 1998
- Mad Max (2015 video game)
- Magnum (disambiguation)
- Magnum Opus (I Am Groot)
- Magnum Opus (Top Quality album)
- Magnum Opus (Yngwie Malmsteen album)
- Magnum Opus Con
- Magnum opus (alchemy)
- Masterpiece (disambiguation)
- Megala Erga
- Opus (disambiguation)
- Opus Magnum
- Opus Magnum (album)
- Oreet Ashery
- Randy Piper
- Richard Allinson
- Steve Levine