Handbook may refer to:
- Citadel handbook (basic) - a book available from Avalani giving information on the basics of Clan Citadels
- Citadel handbook (advanced) - a book retrieved from Avalani that gives more advanced information about citadels
- Castle Wars Handbook, a book that details all of the special actions that a player can only perform while playing Castle Wars
- RuneScape - The Official Handbook, a printed book written by Tracey West