The Haunted Showboat

{{short description|1957 novel by Carolyn Keene}}

{{Use mdy dates|date=March 2025}}

{{Infobox book

| name = The Haunted Showboat

| image = File:TheHauntedShowboat.jpg

| caption = First edition

| author = Carolyn Keene

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| series = Nancy Drew Mystery Stories

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| publisher = Grosset & Dunlap

| pub_date = 1957

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| preceded_by = The Hidden Window Mystery

| followed_by = The Secret of the Golden Pavilion

}}

The Haunted Showboat is the thirty-fifth book in the Nancy Drew mystery series. It was first published in 1957 under the pseudonym Carolyn Keene.[https://www.worldcat.org/oclc/779061218 The Haunted Showboat] at WorldCat The actual author was ghostwriter Harriet Stratemeyer Adams.