Daniel Steven Peña Sr. (born August 10, 1945) is an American businessman.^[2]

Peña is Mexican American and was raised in East Los Angeles, California.^{[3][unreliable source?][2]} In 1971, he graduated from San Fernando Valley State College School of Business Administration and Economics^[4] with a Bachelor of Science degree in Business Administration.^[2]

Peña's mother was from Mexico and is from both Austrian and Spanish descent. His family moved to Encino when he was 10 years old.^[5] His father, who was from New Mexico, was one of the first Mexican American detectives in the Los Angeles Police Department and later worked in a secret CIA unit where he oversaw an investigation into the death of Robert F. Kennedy.^[5]

Peña began his career as a financial analyst on Wall Street.^[6] He went on to become president of Great Western Resources, Inc., a Houston-based oil company listed on the London Stock Exchange in 1984.^[7] In a move backed by shareholders, Peña was ousted as president of the company in 1992 and subsequently awarded $3.3 million by an American jury, after suing the company over his dismissal.^[8][9]

In 1984, Peña bought Guthrie Castle in Angus, Scotland from which he has operated several businesses.^[10][11]

In 2017, the castle and estate manager employed by Peña at Guthrie Castle was found to have committed fraud by double or triple booking wedding facilities and paying the higher charges into their own account.^[12] Peña said he forgave the employee and covered the £130,000 stolen from clients.^[13]