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. Sabikui Bisco

2. Ryuuou no Oshigoto!

3. Jaku-Chara Tomozaki-kun

4. Hige wo Soru. Soshite Joshikousei wo Hirou.

5. 86

6. Youkoso Jitsuryoku Shijou Shugi no Kyoushitsu e

7. Bokutachi no Remake

8. Sankaku no Kyori wa Kagiri Nai Zero

9. Toaru Majutsu no Index

10. Sword Art Online

Top 10 tankoubon

1. Honzuki no Gekokujou: Shisho ni Naru Tame ni wa Shudan wo Erandeiraremasen

2. Umibe no Byouin de Kanojo to Hanashita Ikutsuka no Koto

3. Monogatari Series

4. Overlord

5. Tensei shitara Slime Datta Ken

6. Majo no Tabitabi

7. JK Haru wa Isekai de Shoufu ni Natta

8. Mushoku Tensei: Isekai Ittara Honki Dasu

9. Slime Taoshite 300-nen, Shiranai Uchi ni Level Max ni Nattemashita

10. Kumo desu ga, Nani ka?