"Don Mendo" is a Spanish operetta written by the composer Pablo Sorozábal. It premiered in 1918 and is known for its lively music and humorous plot. The story revolves around the character Don Mendo, a nobleman who seeks revenge after being wronged. The operetta combines elements of comedy and romance, making it a popular choice in Spanish-speaking countries. The work is characterized by its catchy melodies and engaging dialogue. It often features themes of love, betrayal, and social class, reflecting the cultural context of early 20th-century Spain. "Don Mendo" remains a significant piece in the repertoire of Spanish musical theater.