Marcos Alonso

Marcos Alonso may refer to any of the following Spanish footballers:

• Marcos Alonso (footballer, born 1933) (1933–2012), also known as "Marquitos", defender
• Marcos Alonso (footballer, born 1959) (1959–2023), his son, former winger and coach
• Marcos Alonso (footballer, born 1990), his grandson, defender/midfielder for RC Celta de Vigo