Just in case you want to know who you share a birthday with..:D(Might miss some,please inform me if I do.o3o)

January-
January 1, 1560 (lunar calendar December 12, 1559?) Kayura (Yoroiden Samurai Troopers / Ronin Warriors)
January 1, 1952 Reiko Asagiri (Gatekeepers)
January 1, 196X Belldandy (Oh! My Goddess) (according to her student ID)
January 1, 1976 Mai Shiranui (King of Fighters, Fatal Fury)
January 1, 1984 Maki Tanabe (Gun Parade March)
January 1, 1986 Ren Tao (Shaman King)
January 1, 1997 Johji Ohtomo (Future GPX Cyber Formula)
January 1, 2231 Kei (Dirty Pair Flash)
January 1, 4982 Kris Christopher (Battle Athletes Daiundokai)
January 1 Kaede Rukawa (Slam Dunk)
January 1 Gai (Naruto)
January 1 Miyuki Kotobuki (Tokimeki Memorial 2)
January 1 Momiji Kagariya (Yamamoto Yohko)
January 1 Batsu Ichimonji (Rival Schools 2)
January 1 Sakura Saginomiya (Aozora Shoujotai)
January 1 Sumomo (Chobits)
January 1 Mutsuki Ichimonji (Happy Lesson)
January 1 Kitakita Oyaji (Adburg Eldor) (Mahoujin Guruguru)
January 1 Osaka Naru (Sailor Moon)
January 1 Kyyusaku Natsume ([All-Purpose Cultural Catgirl] Nukunuku)
January 1 Riku Kamiya (Tokimeki Tonight)
January 1 Edgemaster (Soul Calibur)
January 1 Shinichirou Suwa (I-Doll)
January 1 Masako Ikeda (voice actor) Nodoka Saotome (Ranma 1/2), Maeter (Galaxy Express 999), Tooru (X)
January 2 Ginga Torikai (Reideen)
January 2 Iwashi Tatami (Naruto)
January 2 Maria Luise (G Gundam)
January 2 Orie Ishizuka ([Zettai Muteki] Raijin-Oh)
January 2, Qing 89th year Wan Fu (Samurai Shodown/Samurai Spirits)
January 2, 1912 Shun Di (Virtua Fighter)
January 3, 1902 Ichirou Oogami (Sakura Taisen)
January 3, 2043 Scott Heyward (Vifam)
January 3 Keisuke Yuuki (Fushigi Yuugi)
January 3 Koharu Hotta (Princess Nine)
January 3 Rakushu (Shurato)
January 3 Fujitaka Kinomoto (Card Captor Sakura)
January 3 Cyan Garamonde (Final Fantasy VI (Japan)/III (US))
January 3 Laguna Loire (Final Fantasy VIII)
January 3 Gan Isurugi (Rival Schools 2)
January 3 Tentzaa (Yamamoto Yohko)
January 3 Bart Garsus (Vandread)
January 3, 1977 Mayumi Iizuka (voice actor) Nanaka Nakatomi (Mahou Tsukai Tai!), Flute (Violinist of Hamelin), Kasumi (Pocket Monsters), Cleo (Sorcerous Stabber Orphen)
January 3 Kentarou Itou (voice actor) Doll Isamu (Super Doll Rika-chan), Hishou (Chousha Reideen)
January 3 Rie Tanaka (voice actor) Yuumi (Shin-Hakkenden), Machela (Wild Arms TV)
January 4 Mami Shimura (Sotsugyou Vacation)
January 4 Yasuyuki Hirata (voice actor) Millefeuille (Bakuretsu Hunters),Steve (Lupin III: Kutabare Nostradamus!)
January 5 Doll/Tiger (Jura Tripper)
January 5, 1931 Gen Fu (Dead or Alive)
January 5, 1968 Terrence T. D'arby (JoJo's Bizarre Adventure)
January 5, 1979 Keitarou Urashima (Love Hina)
January 5, 2283 Yoko Mizuno (Galaxy Fraulein Yuna)
January 5 Bass Armstrong (Dead or Alive 2)
January 5, 1941 Hayao Miyazaki (director) (Nausicaa, Totoro, Mononoke Hime, etc.)
January 5, 1966 Yuri Amano (voice actor) Ifuriita (El Hazard), Kiyone (Tenchi Muyo), Keiko (Yuu Yuu Hakusho)
January 5, 1965 Rei Sakuma (voice actor) Shampoo (Ranma 1/2), Jiji (Kiki's Delivery Service), Arshes Nei (Bastard)
January 6, 1385 Amidamaru (Shaman King)
January 6, 1981 Hotaru Tomoe/Sailor Saturn (Sailor Moon)
January 6, 1974 Cammy (Street Fighter 2)
January 6 Kou Gaiji (Gensou Maden Saiyuuki)
January 6 Canis Major Sirius (Saint Seiya)
January 6 Makoto Sawatari (Kanon)
January 6, 1975 Yukana Nogami (voice actor) Yuri (Wedding Peach), Azusa (Azuki-chan), Mirai (Moldiver), Yuzuriha Nekoi (X)
January 7, 1921 Lee Pai Long (Art of Fighting)
January 7 Yuuki Wasaka (Dream Saga)
January 7 Ayu Tsukimiya (Kanon)
January 7 Kaho (Sister Princess)
January 7 Maiko Itou (voice actor) Mamoru (Gaogaiger)
January 8, 1907 Sumire Kanzaki (Sakura Taisen)
January 8, 1926 Ching Tao (Shaman King)
January 8 Victor (Angelique)
January 8 Tetsuo Kaga (Hikaru no Go)
January 8 Hiashi Hyuga and Hizashi Hyuga (Naruto)
January 8 Grant (Garou: Mark of the Wolves)
January 8, 1959 Sumio Matsunuma (Karuizawa Syndrome)
January 8, 1975 Reiko Chiba (voice actor) Nakoruru (Samurai Spirits), Run (Otaku Galaxy)
January 9, 1551 (lunar calendar December 3, 1550?) Anubis / Kujuro Sasaki (RW name: Cale) (Yoroiden Samurai Toopers / Ronin Warriors)
January 9, 1721 Nicotine Kafuin (Samurai Shodown/Samurai Spirits)
January 9 Haku (Naruto)
January 9 Rei Igarashi (voice actor) Miho Iwakura (Serial Experiments Lain), Mira Kagami (Tokimeki Memorial), Enefea (Edens Bowy)
January 10 Ryouka Yuzuki (voice actor) Mihou (Angel Links)
January 10 Kanako Mitsuhashi (voice actor) Kirua (Hunter x Hunter), Rie Satou (Boogie Pop Phantom)
January 10, 1978 Leona (King of Fighters)
January 11, 1984 Koalla Suu (Love Hina)
January 11 Dalida Roe Laha Chandora II (Gundam SEED)
January 11 Mio Juuonji (I-Doll)
January 11 Cyberdoll Sara (Hand Maid May)
January 11 Nana the Dog (Tenshi no Shippo: Otogi Story PETS)
January 11 Kenichi Ono (voice actor) Asurada (Cyber Formula), Joe (Gekiganger 3)
January 11, 1969 Kyouko Hikami (voice actor) Yuilii Habana (Mugen no Ryvius), Cocoa (Lamune), Momoko (Wedding Peach), Nyan Nyan (Fushigi Yuugi)
January 12 Capricorn Shura (Saint Seiya)
January 12 Elle Vianno (Gundam ZZ)
January 12 Icchan (Ichirou Mihara) (Angelic Layer)
January 13 Saki Nijino (Tokimeki Memorial)
January 13, 1938 Nachi Nozawa (voice actor) Masumi Hayami (Glass no Kamen), Cobra (Cobra)
January 14, 467 RC Siegfried Kircheis (Legend of Galactic Heroes)
January 14 Sakuno Ryuzaki (Prince of Tennis)
January 14 Neteru-kun (Tottoko Hamutarou)
January 14 Raymond Bishop (G Gundam)
January 15, 1960 Miki (City Hunter)
January 15, 1987 Shiki Mihara (Tokimeki Memorial Girls' Side)
January 15 Fujiwara no Yukitaka (Haruka Naru Toki no Naka de 2)
January 15 Rie Shibata ([All-Purpose Cultural Catgirl] Nukunuku)
January 15, 1955 Mayumi Tanaka (voice actor) Ryuunosuke (Urusei Yatsura), Wataru (Wataru), Pazu (Laputa), Kanna (Sakura Taisen)
January 16 Masaki Shiratori (Tokimeki Memorial 3)
January 16 Eriko Tamura (Idol Densetsu Eriko)
January 16 Takashi Ayanokouji (PitaTen)
January 16 Takkou Ishimori (voice actor) Dr. Password (KO Beast Century), Roberto (Orguss), Franklin Vidan (Z Gundam)
January 17 Kai Hirose (Brave Command Dagwon)
January 17 Kozue Izumi (Infinite Ryvius)
January 17 Seiji Ogata (Hikaru no Go)
January 17 Pandora (The Violinist of Hameln)
January 17, 1955 Mami Koyama (voice actor) Arare (Dr. Slump), Oyuki (Dagger of Kamui), Kei (Akira)
January 18 Widoshiku/Akira Onishi (Time Stranger Kyoko)
January 18 Miko Kamiyama (Kakyuusei)
January 18 Shizuka Mitsuki (Kakyuusei)
January 18, 1765 Basara Kubikiri (Samurai Shodown/Samurai Spirits)
January 18, 1956 Yuu Mizushima (voice actor) Mars (God Mars), Andre (Rose of Versailles), Misty (Saint Seiya)
January 19, 1838 Will Antonio Zepelli (JoJo's Bizarre Adventure)
January 19 Gaara (Naruto)
January 19 Taeko Adachi (Sentimental Graffiti)
January 20, 1983 Seika Mori (Gun Parade March)
January 20, 1987 Shiho Arisawa (Tokimeki Memorial Girls' Side)
January 20 Maeka Kudanshita (Tokimeki Memorial 2)
January 20, 1962 Sakiko Tamagawa (voice actor) Natsumi (Taiho Shichau Zo!), Pirotase (Lodoss), Daughter (Bakuretsu Hunter)
January 21, 1954 Geese Howard (King of Fighters, Fatal Fury)
January 21 Puchiko (Di-Gi-Charat)
January 21, 1969 Mick Nekoi (CLAMP assistant artist) (X, RG Veda, Tokyo Babylon, etc.)
January 22, 1941 Tarou Rin (director) (Dagger of Kamui, Galaxy Express 999, X)
January 22, 1961 Shigeru Nakahara (voice actor) Trowa (Gundam W), Number 17 (DBZ), Kurama (Yuu Yuu Hakusho), Arion (Arion)
January 22 Romi Paku (voice actor) Kanan Gimos (Brain Powerd), Loran Seakku (Turn-A Gundam)
January 23, 1845 Yuki (The Last Blade)
January 23, 1982 Inaho Hitomebore (Master Mosquiton '99)
January 23, 1989 Bonne Jenet (Garou: Mark of the Wolves)
January 23 Cygnus Hyoga (Saint Seiya)
January 23 Shino Aburame (Naruto)
January 23 Claude C. Kenny (Star Ocean EX)
January 23 Yasuhiro Takato (voice actor) Artemis (Sailor Moon), Sam Erg (Gundam F-91)
January 24 Francois/ Cyborg 003 (Cyborg 009)
January 24 Ayano Elizabeth Hakuhoin (Yamamoto Yohko)
January 24 Rihoko Yoshida (voice actor) Teto (Nausicaa), Megu (Majokko Megu-chan), Mirai (Mama is a 4th Grader)
January 25 Dr. Gilmour (Cyborg 009)
January 25 Kyousuke Tamamo (Jigoku Sensei Nuube)
January 25 Minoru Kokubunji (Chobits)
January 25 Katsuya Johnouchi (Dub name: Joey Wheeler) (Yu-Gi-Oh)
January 25, 1938 Reiji Matsumoto (mangaka) Galaxy Express 999, Captain Harlock, etc.
January 25, 1967 Nozomu Sasaki (voice actor) Tetsuo (Akira), Yuusuke Urameshi (Yuu Yuu Hakusho), Kazuya Hasukawa (Koko wa Greenwood)
January 25, 1960 Miki Narahashi (voice actor) Misae Nohara (Crayon Shinchan), Masao Tachibana (Captain Tsubasa)
January 26 Miine (Shaman King)
January 26, 1967 Tomoyuki Morikawa (voice actor) D-Boy (Tekkaman Blade), Shagia Frost (Gundam X), Hiroshi (Moldiver), Yuusuke (Gokinjo Monogatari)
January 27 Papillon Myu (Saint Seiya)
January 27, 1978 Haruka Ten'ou/Sailor Uranus (Sailor Moon)
January 27, 1962 Dr. Kozaburo Nambu (Gatchaman)
January 27 Ayu Kawahara (To the North - White Illumination)
January 27,1967 Balrog (USA: Vega) (Street Fighter 2)
January 28 Yaone (Gensou Maden Saiyuuki)
January 28 Tarou Hanaukyou (Hanaukyou Maid Team)
January 28 Noriyuki? Hakusui? (Sakura Taisen 3)
January 28 Jean Rubran (Yadamon)
January 28, 2048 Fred Shuffle (Vifam)
January 28 Alice Shinohara (Peach Pai) (Suchie Pai Adventure - Doki Doki Nightmare)
January 28 Raizze Haimer (Mitsumete Knight)
January 28 Rie Iwatsubo (voice actor) Mariko Suzuki (Please Save My Earth), Shion (Idol Project)
January 28, 1954 Kaneto Shiozawa (voice actor) D (Vampire Hunter D), Narsus (Arslan), Ryo (Dancougar)
January 29 Mai Kawasumi (Kanon)
January 29 Masayuki Katou (voice actor) Nobita's father (Doraemon)
January 30, 1966 Yoshikage Kira (JoJo's Bizarre Adventure)
January 30, 1980 Himeko Nonohara (Hime-chan no Ribbon)
January 30 Atsuro Kiryuu (Kaikan Phrase)
January 30 Satoru Saruyama (eX-D)
January 30 Helena (Dead or Alive 2)
January 30 Takaomi Kai (Dream Saga)
January 30, 1981 Chieko Higuchi (voice actor) Takako Takahata (Mizuiro Jidai), Mimori (Kerokero Chime)
January 30 Mariko Suzuki (voice actor) Honoka Sawatari (Sentimental Journey)
January 31 Itsuki Kujou (Hanazakari no Kimitachi E)
January 31 Sato Kimijima (I-Doll)
January 31 Keiko Yukimura (Yuu Yuu Hakusho)