15th Empire of Ivory
- Naomi Novik
13th Black Powder War (Temeraire 3)
- Naomi Novik
13th Star Trek: Myriad Universes: Infinity's Prism: Myriad Universes Bk. 1
- Christopher L. Bennett,William Leisner,James Swallow
13th Temeraire: The Throne of Jade (Temeraire series book 2)
- Naomi Novik
13th Temeraire (Temeraire 1) [a.k.a. His Majesty's Dragon]
- Naomi Novik
13th The Honour of Rome
- Simon Scarrow
13th Men At Arms
- Terry Pratchett
13th Metropolitan (Metropolitan #1)
- Walter Jon Williams
13th Feet of Clay
- Terry Pratchett
13th Hench
- Natalie Zina Walschots
13th Lords and Ladies
- Terry Pratchett
13th Aspects
- John M. Ford
13th The Face in the Frost
- John Bellairs