Luis Antonio Costa
Luis Antonio Costa( born 31 January 1953) is an Argentine field hockey player.
He competed in the men's tournament at the 1976 Summer Olympics.
Dan Frost
Dan Frost( born 22 May 1961 in Frederiksberg, Hovedstaden) is a retired male track cyclist from Denmark, who won the gold medal for his native country in the men's points race at the 1988 Summer Olympics in Seoul, South Korea.
His other major victories include the world title in the same event in 1986( Colorado Springs).
He is the brother of cyclist Ken Frost.
After retiring from racing he worked in management for Bjarne Riis's Team CSC for nine seasons before joining Team Sky as a directeur sportif for 2014 before leaving competitive cycling to organise bike trips and work with the Amaury Sport Organisation, the organisers of the Tour de France.
Luis Marcoleta
Luis Antonio Marcoleta Yáñez( born 1 February 1959) is a Chilean former footballer and manager.
Luis Antonio Chávez
Luis Antonio Chavez( died April 13, 2010) was a Honduran journalist and host of a children's radio program.
Luis Antonio Amuchástegui
Luis Antonio Amuchástegui( born 12 December 1960 in Córdoba) is a former Argentine footballer.
He played for a number of clubs in Argentina and represented the Argentina national football team.
he played over 200 games for Racing de Córdoba.
Amuchástegui started his career with Racing de Córdoba, he was an important member of the team that contested the final of the Nacional championship in 1980.
In 1983, he travelled to Spain to join Valencia CF for a fee of US$ 300,000 but he could not acclimatise to life in Europe and returned to Argentina without signing the contract, Valencia eventually signed Juan Jose Urruti instead, and Amuchástegui spent several months without a club before joining San Lorenzo de Almagro in 1984.
After a successful season with San Lorenzo he joined River Plate where he was part of the championship winning team of 1985- 1986.
He then helped the club to win the Copa Libertadores in 1986.
Amuchástegui moved to Mexico in 1986 and played for América.
After a few years in Mexico he returned to Argentina to play for Racing de Córdoba and then General Paz Juniors in the lower leagues.
In 1992, he joined San Lorenzo for pre-season training but walked out of the club without playing a single game for them.
This incident marked his retirement from professional football.
Luis Antonio Twose
Luis Antonio Twose( born 21 November 1950) is a Spanish field hockey player.
He competed at the 1972 Summer Olympics and the 1976 Summer Olympics.
Luis Pavez Contreras
Luis Antonio Pavez Contreras( born 25 June 1988) is a Chilean football player who plays for Unión Española as a midfielder.
Luis Antonio Regalado
Luis Antonio Regalado Reyes( January 10, 1922 – 2001) was a Salvadoran footballer and coach.
Luis Díez
Luis Antonio Díez (2 November 1923 – 23 September 2015) was an Argentine water polo player who competed in the 1952 Summer Olympics.
Luis Antonio Hierro López
Luis Antonio Hierro López( born June 6, 1947 in Montevideo) is a Uruguayan political figure.

Question: Are Dan Frost and Luis Antonio Amuchástegui both from the same country?
Answer: no