Crossword clues for the word: WBO The word WBO has appeared as an answer to at least 3 crossword clues on different crossword puzzles. Crossword clues for WBO Showing 1 to 3 of 3 results Clue(s) Grp. recognizing international titleholders in 18 different weight classes Sanctioning assn. for pro pugilists Sanctioning assn. for pugilists