| Z For Zachariah | O'Brien, Robert C. | 820 | 5.6 | NR | 12 | 59,663 | Fiction |
| Z Was Zapped, The | Van Allsburg, Chris | BR | 2.9 | NR | 1 | 140 | Fiction |
| Zach's Lie | Smith, Roland | 580 | 5.6 | R | 13 | 46,368 | Fiction |
| Zachary Taylor | Collins, David R. | 1130 | 7.5 | NR | 8 | 27,839 | Nonfiction |
| Zachary Taylor | Kent, Zachary | N/A | 9.0 | NR | 6 | 10,854 | Nonfiction |
| Zachary Taylor | Kops, Deborah | 1090 | 8.3 | S | 6 | 13,824 | Nonfiction |
| Zachary's Ride | Evans, Chenille | 430 | 3.5 | N | 2 | 1,788 | Fiction |
| Zack At School | London, Jonathan | 300 | 2.6 | J | 1 | 505 | Fiction |
| Zack At The Dentist | London, Jonathan | 330 | 1.9 | H | 1 | 563 | Fiction |
| Zack's Alligator | Mozelle, Shirley | 310 | 2.4 | K | 2 | 1,197 | Fiction |
| Zack's Alligator Goes To Sc... | Mozelle, Shirley | 230 | 1.7 | K | 2 | 1,004 | Fiction |
| Zak's Lunch | Palatini, Margie | 310 | 2.7 | L | 2 | 1,362 | Fiction |
| Zany Zoo | Wise, William | N/A | 3.7 | O | 2 | 1,584 | Fiction |
| Zap! I'm A Mind Reader | Greenburg, Dan | 390 | 2.8 | M | 3 | 5,086 | Fiction |
| Zap! Science Fair Surprise! | Lerangis, Peter | 420 | 3.1 | N | 4 | 8,134 | Fiction |
| Zapatos nuevos para Silvia | Hurwitz, Johanna | 460 | 2.8 | - | 1 | 558 | Fiction |
| Zara's Hats | Meisel, Paul | 770 | 4.3 | C | 2 | 1,132 | Fiction |
| Zartog's Remote | Brennan, Herbie | 650 | 4.2 | - | 4 | 7,156 | Fiction |
| Zat Cat! | McLaren, Chesley | 590 | 2.9 | NR | 2 | 696 | Fiction |
| Zathura: A Space Adventure | Van Allsburg, Chris | 540 | 3.7 | M | 2 | 2,280 | Fiction |
| Zebra Wall, The | Henkes, Kevin | 800 | 5.1 | S | 5 | 20,472 | Fiction |
| Zebra-Riding Cowboy | Medearis, Angela Shelf | N/A | 4.5 | P | 1 | 443 | Fiction |
| Zebras | Lepthien, Emilie U. | N/A | 4.7 | P | 2 | 1,500 | Nonfiction |
| Zebras | Fredericks, Anthony D. | 600 | 3.3 | L | 2 | 1,786 | Nonfiction |
| Zebras (Animal Families) | Giles, Bridget | N/A | 4.6 | NR | 3 | 2,664 | Nonfiction |
| Zebras (Animal Prey) | Markle, Sandra | 860 | 5.4 | U | 3 | 1,856 | Nonfiction |
| Zebras (Animals) | Holmes, Kevin J. | 660 | 2.5 | O | 3 | 1,310 | Nonfiction |
| Zebras (Nature's Children) | Ivy, Bill | N/A | 4.5 | O | 3 | 2,590 | Nonfiction |
| Zebras (True Book) | Stewart, Melissa | 930 | 4.9 | M | 3 | 1,312 | Nonfiction |
| Zebulon Pike: Explorer Of... | Sanford, William R. | 700 | 5.5 | NR | 5 | 6,447 | Nonfiction |
| Zeely | Hamilton, Virginia | 690 | 5.1 | R | 5 | 24,874 | Fiction |
| Zeely Zebra | deRubertis, Barbara | 320 | 1.6 | G | 1 | 326 | Fiction |
| Zeke And Pete Rule! | Dunlap, Linda | 280 | 1.5 | J | 1 | 174 | Fiction |
| Zeke Pippin | Steig, William | 830 | 4.8 | O | 2 | 1,256 | Fiction |
| Zekmet The Stone Carver | Stolz, Mary | N/A | 4.7 | S | 4 | 2,000 | Fiction |
| Zel | Napoli, Donna Jo | 630 | 5.1 | NR | 12 | 46,094 | Fiction |
| Zelda & Ivy & Boy Next Door | Kvasnosky, Laura McGee | 220 | 2.2 | K | 2 | 1,015 | Fiction |
| Zelda And Ivy | Kvasnosky, Laura McGee | 380 | 1.9 | L | 2 | 868 | Fiction |
| Zelda And Ivy: The Runaways | Kvasnosky, Laura McGee | 470 | 2.3 | K | 1 | 996 | Fiction |
| Zelda Strikes Again | Hall, Lynn | 700 | 4.8 | - | 7 | 23,015 | Fiction |
| Zella Zack And Zodiac | Peet, Bill | N/A | 4.4 | P | 2 | 1,371 | Fiction |
| Zellie Blake | Duey, Kathleen | 650 | 4.6 | S | 7 | 26,265 | Fiction |
| Zen And The Art Of Faking It | Sonnenblick, Jordan | 840 | 5.5 | - | 13 | 46,793 | Fiction |
| Zen Shorts | Muth, Jon J | 540 | 2.4 | K | 2 | 1,190 | Fiction |
| Zen Ties | Muth, Jon J | 460 | 2.5 | - | 1 | 974 | Fiction |
| Zenon Kar, Spaceball Star | Sadler, Marilyn | 520 | 2.3 | M | 4 | 6,677 | Fiction |
| Zepha The Monster Squid | Blade, Adam | 690 | 4.3 | - | 5 | 9,651 | Fiction |
| Zeppelin | Donkin, Andrew | 820 | 3.9 | P | 3 | 2,860 | Nonfiction |
| Zero Grandparents | Edwards, Michelle | 420 | 2.9 | L | 2 | 2,038 | Fiction |
| Zero Tolerance | Grant, Adam | 550 | 3.1 | N | 5 | 2,276 | Fiction |
| Zeus | Loewen, Nancy | 570 | 4.9 | NR | 3 | 3,346 | Fiction |
| Zia | O'Dell, Scott | 790 | 5.2 | NR | 8 | 36,103 | Fiction |
| Zieglers And Their Apple | Flanagan, Alice K. | 580 | 3.3 | K | 1 | 411 | Nonfiction |
| Ziggy / Shadows Of Caesar's Cr | Draper, Sharon M. | 830 | 5.5 | R | 5 | 14,162 | Fiction |
| Ziggy / Space Mission Adventur | Draper, Sharon M. | 900 | 5.7 | R | 5 | 14,600 | Fiction |
| Ziggy / Stars And Sparks On St | Draper, Sharon M. | 870 | 5.6 | R | 6 | 15,791 | Fiction |
| Ziggy And The Black Dinosaurs | Draper, Sharon M. | 720 | 4.1 | P | 4 | 11,499 | Fiction |
| Ziggy Piggy & Three Little Pig | Asch, Frank | 420 | 2.6 | K | 2 | 856 | Fiction |
| Ziggy's Blue Ribbon Day | Mills, Claudia | 560 | 3.2 | L | 1 | 970 | Fiction |
| Ziggy/Lost In The Tunnel Of Ti | Draper, Sharon M. | 610 | 3.9 | O | 5 | 11,365 | Fiction |
| Zigzag Movement | Schaefer, Lola M. | 420 | 2.1 | H | 1 | 50 | Nonfiction |
| Zillah & Me | Dunmore, Helen | 640 | 4.5 | - | 8 | 30,509 | Fiction |
| Zimbabwe | Rogers, Barbara Radcliffe | 1130 | 9.0 | T | 7 | 20,415 | Nonfiction |
| Zimbabwe in Pictures (2nd ed.) | Di Piazza, Francesca | 1170 | 8.5 | Z | 6 | 14,791 | Nonfiction |
| Zimbabwe In Pictures (c.1988) | Lerner, Geography Department | 1240 | 9.0 | NR | 6 | 9,809 | Nonfiction |
| Zin! Zin! Zin! A Violin | Moss, Lloyd | N/A | 3.5 | NR | 1 | 362 | Fiction |
| Zina Garrison: Ace | Porter, A.P | 900 | 6.3 | NR | 3 | 6,440 | Nonfiction |
| ZinderZunder | Ridley, Philip | 480 | 2.7 | - | 6 | 20,108 | Fiction |
| Zink | Bennett, Cherie | 580 | 4.3 | - | 10 | 38,661 | Fiction |
| Zinnia And Dot | Ernst, Lisa Campbell | 560 | 4.9 | L | 2 | 1,137 | Fiction |
| Zip | Brooks, Bruce | 990 | 6.1 | NR | 5 | 19,616 | Fiction |
| Zipping, Zapping, Zooming Bats | Earle, Ann | 730 | 3.5 | M | 2 | 1,063 | Nonfiction |
| Zippity Zinger, The | Winkler, Henry | 730 | 4.1 | R | 7 | 24,578 | Fiction |
| Zlata's Diary | Filipovic, Zlata | 640 | 5.1 | X | 7 | 31,337 | Nonfiction |
| Zlateh the Goat &- Stories | Singer, Isaac Bashevis | 850 | 4.6 | - | 5 | 9,749 | Fiction |
| Zoë And Her Zebra | Beaton, Clare | 470 | 2.1 | - | 1 | 234 | Fiction |
| Zoe Rising | Conrad, Pam | 870 | 5.9 | - | 6 | 22,187 | Fiction |
| Zombie Butts From Uranus! | Griffiths, Andy | 750 | 3.9 | Q | 13 | 54,819 | Fiction |
| Zombie Surf Commandos! | Abbott, Tony | 550 | 3.5 | - | 3 | 10,185 | Fiction |
| Zombies (Monster Chronicles) | Krensky, Stephen | 840 | 5.6 | - | 5 | 4,977 | Nonfiction |
| Zombies (Tales Of Horror) | Pipe, Jim | 880 | 5.6 | S | 3 | 2,093 | Fiction |
| Zombies Don't Date | Zander, R. W. | 500 | 4.1 | Q | 8 | 29,289 | Fiction |
| Zombies Don't Play Soccer | Dadey, Debbie | 560 | 3.2 | M | 3 | 5,760 | Fiction |
| Zomo The Rabbit | McDermott, Gerald | 370 | 2.2 | K | 1 | 519 | Fiction |
| Zoo | Gibbons, Gail | 630 | 4.4 | - | 2 | 750 | Nonfiction |
| Zoo Crew, The | Keene, Carolyn | 550 | 3.2 | - | 5 | 10,282 | Fiction |
| Zoo Doings | Prelutsky, Jack | N/A | 4.1 | N | 2 | 2,561 | Fiction |
| Zoo In The Sky | Mitton, Jacqueline | 750 | 3.3 | L | 2 | 1,294 | Nonfiction |
| Zoo School | Hornik, Laurie Miller | 720 | 3.7 | P | 7 | 23,605 | Fiction |
| Zoo-Looking | Fox, Mem | 580 | 2.2 | G | 1 | 149 | Fiction |
| Zoo-ology | Levitz, Saul | 530 | 3.7 | O | 2 | 1,106 | Nonfiction |
| Zookeeper, The | Olsson, Lisa | BR | 1.2 | C | 1 | 109 | Nonfiction |
| Zookeepers Care For Animals | Moses, Amy | 570 | 2.8 | L | 1 | 455 | Nonfiction |
| Zoologico de poemas | Montalvo, Margarita | N/A | 4.2 | Q | 3 | 1,218 | Fiction |
| Zoom Broom | Palatini, Margie | 350 | 2.9 | P | 2 | 1,346 | Fiction |
| Zoom Lens Mystery, The | Brightfield, Richard | 540 | 3.9 | O | 2 | 1,224 | Fiction |
| Zoom On My Broom | Farber, Erica | BR | 1.3 | F | 1 | 171 | Fiction |
| Zoom! | Munsch, Robert | 330 | 2.4 | K | 2 | 835 | Fiction |
| Zoom! Zoom! Zoom! I'm Off... | Yaccarino, Dan | BR | 2.1 | NR | 1 | 130 | Fiction |
| Zoom, Zoom, Zoom | Hall, Kirsten | 100 | 1.3 | D | 1 | 72 | Fiction |
| Zooman Sam | Lowry, Lois | 620 | 4.8 | P | 7 | 24,715 | Fiction |
| Zoomers And Other Stories | Stine, R. L. | 440 | 2.3 | N | 3 | 6,922 | Fiction |
| Zora Hurston &-Chinaberry Tree | Miller, William | 640 | 3.5 | L | 2 | 662 | Nonfiction |
| Zorro en la escuela | Marshall, Edward | 300 | 2.3 | - | 3 | 1,016 | Fiction |
| Zucchini | Dana, Barbara | 550 | 4.6 | - | 8 | 27,162 | Fiction |
| Zucchini Out West | Dana, Barbara | N/A | 3.5 | - | 11 | 41,000 | Fiction |
| Zucchini Warriors, The | Korman, Gordon | 730 | 5.4 | R | 11 | 44,215 | Fiction |
| Zuecos y naranjas | Amo, Monserrat | 470 | 3.0 | NR | 4 | 4,055 | Fiction |
| Zulu Dancer | O'Brien, Anne | BR | 1.3 | C | 1 | 192 | Fiction |
| Zulu Dog | Ferreira, Anton | 860 | 5.3 | T | 10 | 39,617 | Fiction |
| Zulu Of Southern Africa | Cornell, Christine | 800 | 3.9 | M | 2 | 828 | Nonfiction |
| Zuni Children And Elders | Kavasch, E. Barrie | 840 | 6.2 | - | 3 | 1,620 | Nonfiction |
| Zunis, The | Flanagan, Alice K. | 920 | 6.8 | N | 3 | 1,320 | Nonfiction |
| Zuzu's Wishing Cake | Michelin, Linda | 210 | 1.4 | G | 1 | 347 | Fiction |
| Zzz...Most Interesting Book... | Romanek, Trudee | 960 | 5.9 | U | 4 | 7,244 | Nonfiction |
|