JSE may refer to:

The term black people is used in some socially-based systems of racial classification for humans of a dark-skinned phenotype, relative to other racial groups represented in a particular social context. Different societies apply different criteria regarding who is classified as "black", and often social variables such as class and socio-economic status also play a role, so that relatively dark-skinned people can be classified as white if they fulfill other social criteria of "whiteness" and relatively light-skinned people can be classified as black if they fulfill the social criteria for "blackness" in a particular setting.

As a biological phenotype being "black" is often associated with the very dark skin colors of some people who are classified as "black". But, particularly in the United States, the racial or ethnic classification also refers to people with all possible kinds of skin pigmentation from the darkest through to the very lightest skin colors, including albinos, if they are believed by others to have African ancestry, or to exhibit cultural traits associated with being "African-American". As a result, in the United States the term "black people" is not an indicator of skin color but of socially based racial classification.

Francisco Javier "Patxi" López Álvarez (Spanish pronunciation: [ˈpatʃi ˈlopeθ]; born 4 October 1959) is a Spanish socialist politician and the current president of the Autonomous Community of the Basque Country. He is the Secretary-General of the Socialist Party of Euskadi - Euskadiko Ezkerra (PSE-EE), which is the Basque affiliate of the Spanish Socialist Workers' Party (PSOE).

López, born into a socialist family, was influenced early in life by the political stance of his father, Eduardo López Albizu, a prominent Spanish left-wing anti-Francoist activist. He joined the Young Basque Socialist movement in 1975, and was its Secretary-General from 1985 to 1988. He joined PSE in 1977, and was elected to the Spanish Congress of Deputies at the 1986 General Election representing Vizcaya Province. In the PSE he rose steadily to prominence before being elected Secretary-General in 1997, having become a Member of the Basque Parliament in 1991.

López is known for his opposition to Basque independence. In 2005, he was the PSE-EE's candidate for the presidency of the Basque Country, but lost out to Juan José Ibarretxe of the Basque Nationalist Party (PNV).