Home Misspellings How to spell protocal? Protocal or protocol? Which one is correct? by hersey December 26, 2018 Reading Time: 0min, 7sc + - 0 Protocal or protocol Which one is correct? You can find the answer below. Incorrect Protocal Correct Protocol You can find more information about Protocol word here. Rate this post Correct spelling of ProtocalHow do you spell Protocal