Santiago Lanzuela Marina (Teruel, Spain, 27 September 1948 - 16 April 2020) was a Spanish politician who was a member of the People's Party (PP) and previously served as President of the Government of Aragon, one of the Spanish regional administrations.

An economist by profession, Lanzuela was married with two children. In 1974 he became head of the office for Spanish co-operation with Nicaragua and then served as a director in the Spanish Employment Ministry from 1976 to 1981. In 1987 he was elected to the Aragonese Regional Assembly and in 1989 the PP entered a coalition government with the Aragonese Party (PAR) with Lanzuela serving as Economics Minister until 1993. On 28 May 1995 the PP received the most votes in the Aragonese regional elections and as lead PP candidate, he was elected President of Aragon. Although the PP increased their number of votes and seats in the 1999 elections, the PAR instead backed the candidate of the rival Spanish Socialist Workers' Party for President. 

At the 2000 General Election he was elected to the Spanish Congress, representing Teruel province and was re-elected at the subsequent elections in 2004 and 2008.

He died of COVID-19-related causes on 16 April 2020 in Madrid.