Crossword puzzles are one of the most popular forms of recreation for people who are amused by words. Acrostic puzzles are more challenging than crossword puzzles and also more fun to solve because they involve reasoning as well as a good vocabulary. The puzzles in this particular collection differ from most acrostics because all the definitions and words are related to mathematics or mathematicians. This makes the puzzle more difficult to construct but easier to solve. To solve a mathematical acrostic, some familiarity with mathematical terms is helpful but not really necessary. Most of these puzzles can be (and have been) solved by people who know little or no mathematics but have a good vocabulary.