Kono Light Novel ga Sugoi! (このライトノベルがすごい! Kono Raito Noberu ga Sugoi!, lit. This Light Novel is Amazing!) is an annual light novel guide book published by Takarajimasha. The guide book publishes a list of the top ten most popular light novels according to readers polled on the Internet. An introduction to each of the works comes with each listing, along with an interview of the light novel's author or authors for first place. Many of the light novels that have been listed in this guide book were later adapted into anime series. Most of the light novels listed contain a series of volumes, but some single-volume light novels also get listed. The first release of the guide book was on November 26, 2004 and is the 2005 listing.

Top 10 bunkobon

1. The Ryuo's Work is Never Done!

2. Re:Zero -Starting Life in Another World-

3. Toaru Majutsu no Index

4. Sword Art Online

5. Goblin Slayer

6. Melody Lyrik Idol Magik

7. Gamers!

8. Jaku Chara Tomozaki-kun

9. KonoSuba

10. Kono Koi to, Sono Mirai

Top 10 tankoubon

1. Overlord

2. Monogatari series

3. Kumo Desu ga, Nani ka?

4. Mushoku Tensei: Isekai Ittara Honki Dasu

5. Honzuki no Gekokujō: Shisho ni Naru Tame ni wa Shudan o Erandeiraremasen

6. Ninja Slayers

7. Kyūketsuki ni Natta Kimi wa Eien no Ai o Hajimeru: Long Long Engage

8. Tensei Shitara Slime Datta Ken

9. Bōkyaku Tantei series

10. Kono Sekai ga Game da to Boku dake ga Shitteiru