John Arrillaga (born 1936) is an American real estate mogul and philanthropist. He is one of the largest landowners in Silicon Valley.
In the 1960s, Arrillaga and business partner Richard Peery bought California farmland and converted it into office space. They became two of Silicon Valley's biggest commercial landlords with more than 12,000,000 square feet (1,100,000 m2).
In 2006, he sold 5,300,000 sq ft (490,000 m2) of his real estate holdings for roughly $1.1 billion.
He is well known for his generous support of Stanford University. The alumni center, the Frances C. Arrillaga Building, is named in memory of his first wife, and various other athletic facilities carry his surname. In May 2006, Arrillaga gave $100 million to Stanford.
In June 2013, he again donated to Stanford, writing a check for $151 million, making it the largest individual donation in the school's history. ~source