is a publishing label affiliated with the Japanese publishing company Hobby Japan. It was established in July 2006 and is a light novel label that is aimed at a young adult male readership. Hobby Japan publishes a bimonthly light novel magazine titled ''Charano!''.

==Light novels published under HJ Bunko==

===A===
{| class="wikitable" style="width: 98%;"
|-
!width=30% style="background:#ccf;"| Title
!width=30% style="background:#ccf;"| Author
!width=30% style="background:#ccf;"| Illustrator
!width=10% style="background:#ccf;"| No. of volumes
|-
|''AIKa R-16: Turning Mission''
|Akira Suzuki
|Noriyasu Yamauchi
|1
|-
|''Akuma de Shōjo''
|Hikaru Wakatsuki
|Masato@Takashina
|3
|-
|''Alexion Saga''
|Yū Godai
|Mutsumi Inomata
|2
|-
|''Ano Hibi wo Mōichido''
|Takehaya
|Sou
|1
|-
|''Aoi Hana no Densetsu''
|Yūki Yahara
|Kaduki Kugawara
|1
|-
|''Armored Trooper Votoms: Command Vorct''
|Tōru Nozaki
|Norio Shioyama
|2
|-
|''Ashitabiyori''
|Mamori Amamori
|Suzunari Shimokitazawa
|2
|}

===B===
{| class="wikitable" style="width: 98%;"
|-
!width=30% style="background:#ccf;"| Title
!width=30% style="background:#ccf;"| Author
!width=30% style="background:#ccf;"| Illustrator
!width=10% style="background:#ccf;"| No. of volumes
|-
|''Binzume Otomegokoro''
|Mamori Amamori
|Yūji Naruse
|1
|-
|''Breathless Hunter''
|Shin'ya Kasai
|Eiji Kaneda
|1
|-
|''Bright Red Level''
|Takehiro Arihara
|Kōji
|2
|}

===C===
{| class="wikitable" style="width: 98%;"
|-
!width=30% style="background:#ccf;"| Title
!width=30% style="background:#ccf;"| Author
!width=30% style="background:#ccf;"| Illustrator
!width=10% style="background:#ccf;"| No. of volumes
|-
|''Chōkōjo Sarah''
|Tomonori Terada
|Ein
|4
|-
|''Chōkōjo Sarah Gaiden: Chōkōseijo Becky''
|Tomonori Terada
|Ein
|1
|-
|''Cutting''
|Daisuke Haneta
|Mo
|2
|}

===F===
{| class="wikitable" style="width: 98%;"
|-
!width=30% style="background:#ccf;"| Title
!width=30% style="background:#ccf;"| Author
!width=30% style="background:#ccf;"| Illustrator
!width=10% style="background:#ccf;"| No. of volumes
|-
|''Fake-Fake: Mozō Ohjo Sōdōki''
|Ichirō Sakaki
|Kaori Fujita
|2
|-
|''FLAG: Wartime photo-journalist Saeko Shirasu''
|Mami Watanabe
|Kazuyoshi Takeuchi
|1
|}

===G===
{| class="wikitable" style="width: 98%;"
|-
!width=30% style="background:#ccf;"| Title
!width=30% style="background:#ccf;"| Author
!width=30% style="background:#ccf;"| Illustrator
!width=10% style="background:#ccf;"| No. of volumes
|-
|''Glorious Dawn''
|Takeshi Shōji
|Shiki Dōji
|5 (Franchise)<br />1 (Eyecatch)
|-
|''Genome Seed & Genome Spiral''
|Narumi Takahira
|Yō Fujishiro
|2
|-
|''Goddess!''
|Reiko Hikawa
|Ototsugu Konoe
|2
|-
|''Goldberg Variations''
|Yū Godai
|Rika Suzuki
|1
|}

===H===
{| class="wikitable" style="width: 98%;"
|-
!width=30% style="background:#ccf;"| Title
!width=30% style="background:#ccf;"| Author
!width=30% style="background:#ccf;"| Illustrator
!width=10% style="background:#ccf;"| No. of volumes
|-
|''Hakana-san ga kita!''
|Oda Kyōdai
|Takehito Mizuki
|3
|-
|''Hajimari no Hone no Monogatari''
|Yū Godai
|Rika Suzuki
|1
|-
|''Hell Girl: Urami no Monshō''
|Maki Hiro
|Shunsuke Taue
|1
|-
|''Hibana Sparkling!''
|Seiya Fujiwara
|Noriyuki Matsumoto
|2
|}

===I===
{| class="wikitable" style="width: 98%;"
|-
!width=30% style="background:#ccf;"| Title
!width=30% style="background:#ccf;"| Author
!width=30% style="background:#ccf;"| Illustrator
!width=10% style="background:#ccf;"| No. of volumes
|-
|''Ichiban ushiro no Daimaoh''
|Shōtarō Mizuki
|Sōichi Itō
|1
|-
|''Idolmaster Xenoglossia: Iori Sunshine!+''
|Ryō Suzukaze
|Sikorsky
|1
|-
|''Ikusahime''
|Midori Natsu
|Iruka Shiomiya
|3
|}

===K===
{| class="wikitable" style="width: 98%;"
|-
!width=30% style="background:#ccf;"| Title
!width=30% style="background:#ccf;"| Author
!width=30% style="background:#ccf;"| Illustrator
!width=10% style="background:#ccf;"| No. of volumes
|-
|''Kagetsuki no Yajiri''
|Yui Tokiumi
|Asami
|1
|-
|''Kurokano''
|Midori Natsu
|Tsukasa Saitō
|1
|-
|''Kushizashi Helper Sasare-san''
|Kō Kimura
|Tetsuya Nakamura
|3
|}

===L===
{| class="wikitable" style="width: 98%;"
|-
!width=30% style="background:#ccf;"| Title
!width=30% style="background:#ccf;"| Author
!width=30% style="background:#ccf;"| Illustrator
!width=10% style="background:#ccf;"| No. of volumes
|-
|''Lottery travelers''
|Fumika Shimizu
|Yoshitaka Ushiki
|6
|}

===M===
{| class="wikitable" style="width: 98%;"
|-
!width=30% style="background:#ccf;"| Title
!width=30% style="background:#ccf;"| Author
!width=30% style="background:#ccf;"| Illustrator
!width=10% style="background:#ccf;"| No. of volumes
|-
|''Magical Marine Pixel Maritan''
|L. B. Johnson
|Yukio Hirai
|1
|-
|''Meikai no Amaryllis''
|Ken'ichi Wada
|Atsushi Suzumi
|1
|-
|''My-HiME　Destiny: Ryū no Miko''
|Hideaki Ibuki &<br />Hajime Yatate, My-Hime Project
|Sankichi Meguro
|1
|}

'''HJ文庫'''是Hobby Japan在2006年7月1日創刊的輕小說文庫。台灣由東立出版社代理。

==簡介==
*有舉辦發掘新人的Novel Japan大獎。 
*創刊初級封面設計和角川Sneaker文庫很難區別而受到批評，不到半年後的2007年1月新出版作品設計便大幅變更。
*儘管是輕小說後進文庫系列，代理到國外卻進行的相當迅速。在台灣和東立出版社簽訂獨佔條約，幾乎所有作品都翻譯成繁體中文。
*2007年10月開始，成立以出版TRPG的Reply(遊戲歷程)為主的姊妹系列「HJ文庫G」。

==作品一覽==
:由於未出版書籍眾多，完整列表請見日語版條目。

===東立出版社===
*明天好天氣（雨森麻社/下北澤鈴成）
*亞雷克森傳奇（五代ゆう/いのまたむつみ）
*戰姬（夏綠/シオミヤイルカ）
*退魔少女隊（すずきあきら/明貴美加）
*串刺少女（木村航/中村哲也）
*抽籤勇者（清水文化/牛木義隆）
*壯麗的黎明（庄司卓/四季童子）
*郭德堡變奏曲（五代ゆう/鈴木理華）
*高中女神（ひかわ玲子/近衛乙嗣）
*佐藤家的選擇（貝花大介/今泉昭彦）
*人體戰艦（大迫純一/hippo）
*潛水艇（水城正太郎/あぼしまこ）
*秋吉同學幫幫忙（不破悠/超肉）
*魚）
*超鋼女雪拉（寺田とものり/Ein）
*月之少女（渡辺まさき/山田秀樹）
*緋華Sparkling（藤原征矢/松本規之）
*叛紅獵殺（在原竹広/弘司）
*半熟公主（榊一郎/深山和香）
*屍人狩獵者（葛西伸哉/金田榮路）
*模造王女騷動記（榊一郎/藤田香）
*女王之刃系列（沖田榮次/えぃわ）
*惡魔少女系列（若月光/高階@聖人）
*CUTTING 傷痕（翅田大介/も）
*重回那天（健速/雙）
*TOY JOY POP 狂熱青春（浅井ラボ/柴倉乃杏）