| Triolismus | 3P |
| Tribalismus | tribalism |
| Tritheismus | tritheism |
| Patriotismus | patriotism |
| Apriorismus | apriorism |
| Embolismus | embolism |
| Holismus | holism |
| Realismus | realism |
| Arianismus | Arianism |
| Priapismus | priapism |
| Titoismus | Titoism |
| Ergotismus | ergotism |
| Taoismus | Taoism |
| Terrorismus | terrorism |
| Thomismus | Thomism |
| Truismus | truism |
| Trumpismus | Trumpism |
| Zionismus | Zionism |
| Tantrismus | tantrism |
| Trialis | trial |