Gavroche is a fictional character in the 1862 novel Les Misérables by Victor Hugo. He is a boy who lives on the streets of Paris. His name has become a synonym for an urchin or street child. Gavroche plays a short yet significant role in the many adaptations of Les Misérables, sharing the populist ideology of the Friends of the ABC and joining the revolutionaries in the June 1832 rebellion. He figures in the 3rd, 4th, and 5th parts of the novel.

Street children are poor or homeless children who live on the streets of a city, town, or village. Homeless youth are often called street kids, or urchins; the definition of street children is contested, but many practitioners and policymakers use UNICEF's concept of boys and girls, aged under 18 years, for whom "the street" has become home and/or their source of livelihood, and who are inadequately protected or supervised. Street girls are sometimes called gamines, a term that is also used for Colombian street children of either sex.