Chiba (written: 千葉 lit. "thousand leaves") is a Japanese surname. Notable people with the surname include:
Akira Chiba, president of The Pokémon Company
Chiba Ginko, a gymnastics at the 1964 Summer Olympics
Kaori Chiba (born 1981), Japanese field hockey player
Kazuo Chiba (born 1940), Japanese Aikido teacher
Keiko Chiba (born 1948), Japanese Minister of Justice
Reiko Chiba (born 1975), Japanese actress
Ryohei Chiba (born 1984), Japanese singer
Saeko Chiba (born 1977), Japanese voice actress
Saïd Chiba (born 1970), Moroccan footballer
Shigetane Chiba, a Japanese military commander
Shigeru Chiba (born 1954; also known as Masaharu Maeda), Japanese voice actor
Chiba Shusaku Narimasa (1794–1856), founder of the Hokushin Itto school of swordsmanship
Sonny Chiba (born 1939; also known as Shin'ichi Chiba), Japanese actor
Susumu Chiba (born 1970), Japanese voice actor
Teisuke Chiba (1917–1965), photographer
Tetsuya Chiba (born 1939), Japanese manga artist
Chiba clan, a Japanese clan
Tsunetane Chiba, a Japanese military commander
Fatema Chiba, an Indian teacher
Fictional characters:
Mamoru Chiba (also known as Darien Shields), the only major male character from the Sailor Moon anime and manga series
Atsuko Chiba, main character of the 2006 film Paprika
Kirino Chiba (千葉 紀梨乃), a fictional character from anime Bamboo Blade
Ryuunosuke Chiba, a character in Assassination Classroom anime and manga