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. 86 -Eighty-Six-

3. Infinite Dendrogram

4. Tsuki to Raika to Nosferatu

5. Sword Art Online

6. Bokutachi no Remake

7. Jaku Chara Tomozaki-kun

8. Gamers!

9. Dungeon ni Deai o Motomeru no wa Machigatte Iru Darou ka

10. A Sister's All You Need

Top 10 tankoubon

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

2. Kumo Desu ga, Nani ka?

3. Saga of Tanya the Evil

4. Overlord

5. Monogatari series

6. Tensei Shitara Slime Datta Ken

7. Mushoku Tensei: Isekai Ittara Honki Dasu

8. Yokohama Eki SF

9. Majo no Tabitabi

10. If It's for My Daughter, I'd Even Defeat a Demon Lord