There are 21 12-letter words that start with 'ana'.
Note: These 21 12-letter words that start with 'ana' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words start with anal, anap, anat, anag, anac, anab, anae, anar, anas, anad, anam, anan.
4-letter words start with 'ana' (2)