Resources › For Students and Parents What Is the Plural of Octopus? Share Flipboard Email Print Octopus Tentacles. doodlemachine / Getty Images For Students and Parents Homework Help Homework Tips Learning Styles & Skills Study Methods Time Management Private School Test Prep College Admissions College Life Graduate School Business School Law School Distance Learning View More by Grace Fleming Grace Fleming has a master's degree in education and is an academic advisor and college enrollment counselor. She lectures and writes about study skills. Updated May 06, 2019 Question: What Is the Plural of Octopus? Answer: You really can't go wrong if you try to come up with a plural for octopus on your own. Like many nouns, it has a few acceptable plural forms. The correct forms are octopuses, octopodes, or octopi. Advice: stick with octopuses in the U.S. It is the most commonly-accepted plural form of octopus. Continue Reading