There are 11 10-letter words that start with 'ran'.
| rancherias | rancidness | randomized | 
| randomizer | randomizes | randomness | 
| rangelands | ranknesses | ransackers | 
| ransacking | ranunculus | |
Note: These 11 10-letter words that start with 'ran' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words start with ranc, rand, rank, rang, rans, rant, ranu, rani, rane, ranp.
4-letter words start with 'ran' (5)