There are 17 words that end with 'ctant'.
| octant | reactant |
| humectant | expectant |
| infectant | injectant |
| reductant | reluctant |
| attractant | protectant |
| surfactant | interactant |
| unreluctant | disinfectant |
| cosurfactant | transductant |
| cryoprotectant | |
Note: These 17 words that end with 'ctant' are found from the USA & Canada version of the tournament Scrabble word list.