By Six, you may be looking for:
- Agent Six, one of the main characters of the Generator Rex series.
- Agent Six (Reboot), a character from the Ben 10 (2016) continuity.
- Agent Six (M. Rex), one of the main characters of the M. Rex comic series.
- The Six, a group consisting of the six most dangerous people on the planet.
- Divide By Six, the sixth episode of season two.
- Six Minus Six, the eighteenth episode of season two.