The Project Guide is your place to connect to our entire collection of Ohio 4-H project books for the year. Each project book contains information and activities for members to explore as an organized group project or at home under the guidance of a parent or interested adult. When choosing a project, consider your interests, background, what is necessary to start the project, and the resources available to help you complete it. 
Ohio residents can order project books and other publications described in the Project Guide through local county Ohio State University Extension offices. Out-of-state residents or Ohio residents who want to buy online can go directly to extensionpublications.osu.edu.
Download the Project Guide
2025 Ohio 4-H Project Guide (.pdf)
Corrections: Please note the following updates from the original print version of the 2025 Ohio 4-H Project Guide:
- pp. 9, 34Â Discovering 4-H (091) is not an Ohio State Fair eligible project in 2025.
- p. 9Â The Beef Feeder project (117BF) is Ohio State Fair eligible.
- p. 36Â Â Look Great for Less (425) is now also included on the Project List
- p. 37 The Junior Master Gardener Level 1 Handbook is project number 672
- p. 38  Microscope Mysteries is project number 489
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Thank you to Kroger for sponsoring Ohio 4-H's annual family guide mailing! Your support is crucial to the success of our 4‑H members as they complete projects.