In the picture book section (under the author's last name)

Little Badger, Terror of the Seven Seas by Bunting

Come Away From the Water, Shirley by Burningham

Rabbit Pirates: A Tale of the Spinach Main by Cox

Tough Boris by Fox

Pirate Who Tried to Capture the Moon by Haseley

One-Eyed Jake by Hutchins

Maggie and the Pirates by Keats

Robin Hook: Pirate Hunter! By Kimmel

The Horrendous Hullabaloo by Mahy

The Pirate's Parrot by McFarland

Edward and the Pirates by McPhail

Pirate School by McNaughton

The Old Pirate of Central Park by Priest

Do Pirates Take Baths? by Tucker

Penelope and the Pirates by Young

Chapter Books in the j fiction section (unless noted differently). Look under the author's last name.

Pirate's Promise by Bulla

Pirate's Past Noon by Osborne (Magic Treehouse series, paperback)

The Not-So-Jolly Roger by Sceiska (Time Warp Trio series, paperback)

More Challenging Reading (located in the nonfiction section)

The World of the Pirate by Garwood (j910.4 FAR)

Sunken Treasure by Gibbons (j910.4 GIB)

Hidden Treasures of the Sea (j910.4 HID)

Treasures in the Sea by McClung (j910.4 MCC)

The Search for the Atocha Treasure by O'Byrne-Pelham (j910.4 OBY)

Gold and Silver, Silver and Gold: Tales of Hidden Treasure by Schwartz (j910.4 SCH)

Pirates by Steele ( j910.45 STE)