Septimus
- Arcadia (play)
- Doctor Septimus Pretorius
- Felix of Thibiuca
- L. Septimius Bassianus
- Lucius Septimius
- Lucius Septimius (Roman governor)
- Mrs Dalloway
- Publius Septimius Geta
- Q. Septimius Florens Tertullianus
- Sep Lambert
- Septimania
- Septimia gens
- Septimius (usurper)
- Septimius Acindynus
- Septimius Antiochus
- Septimius Odaenathus
- Septimius Severus
- Septimius Worod
- Septimius Zabdas
- Septimius of Iesi
- Septimus (Stardust)
- Septimus (horse)
- Septimus (praenomen)
- Septimus Aspinall
- Septimus Atterbury
- Septimus Bean and His Amazing Machine
- Septimus Edwin Scott
- Septimus Francom
- Septimus Harding
- Septimus Heap
- Septimus Holmes Godson
- Septimus J. Hanna
- Septimus Kaikai
- Septimus Kinneir
- Septimus Norris
- Septimus Ridsdale
- Septimus Robinson
- Septimus Rutherford
- Septimus Warwick
- Septimus Weasley
- Septimus Winner
- William John Locke