There are 387 words that end with 'th'.
Note: These 387 words that end with 'th' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words end with oth, ith, ath, nth, uth, eth, rth, wth, dth, lth, gth, hth, fth, yth, mth, pth, sth, xth.
3-letter words end with 'th' (2)