Phantasis is a genus of longhorn beetles of the subfamily Lamiinae, containing the following species:

• Phantasis ardoini Breuning, 1967
• Phantasis avernica Thomson, 1865
• Phantasis carinata Fåhraeus, 1872
• Phantasis gigantea (Guérin-Méneville, 1844)
• Phantasis nodulosa Sudre & Teocchi
• Phantasis sansibarica (Harold, 1878)
• Phantasis satanica Thomson, 1860
• Phantasis stupida Kolbe, 1894
• Phantasis tenebricosa Sudre & Teocchi

...