贝尼托·佩雷斯·加尔多斯（西班牙语：Benito Pérez Galdós，1843年5月10日－1920年1月4日）是个西班牙的现实主义小说家。贝尼托·佩雷斯·加尔多斯出生于加那利群岛大加那利岛拉斯帕尔马斯，后来移居到马德里，20岁的他就在那里度过了他的大部分的成年生活。

Benito Pérez Galdós (May 10, 1843 – January 4, 1920) was a Spanish realist novelist. Some authorities consider him second only to Cervantes in stature as a Spanish novelist. He was the leading literary figure in 19th century Spain.

Galdós was a prolific writer, publishing 31 novels, 46 Episodios Nacionales (National Episodes), 23 plays, and the equivalent of 20 volumes of shorter fiction, journalism and other writings. He remains popular in Spain, and it is considered as equal to Dickens, Balzac and Tolstoy. As recently as 1950, few of his works were available translated to English, although he has slowly become popular in the Anglophone world.