Seijo

Seijo is a name; notable people called Seijo include:


 * Seijo Inagawa (1914–2007), Japanese yakuza boss, founder of the Inagawa-kai
 * Bibiana Campos Seijo, editor, publisher, and media executive
 * Francisco Zayas Seijo (born 1951), former member of the Puerto Rico House of Representatives
 * Jorge Seijo (born 1942), radio and television personality
 * Luisa Seijo (born 1950), Puerto Rican academic, activist, and social worker