1. FSV Mainz 05, officially known as 1. Fußball- und Sportverein Mainz 05 e.V., is a German professional football and multi-sport club based in Mainz, Rhineland-Palatinate. Founded on 16 March 1905, the organisation has developed from a local sports association into an established club in German football. Its men's first team competes in the Bundesliga and plays its home matches at the MEWA ARENA, which has a capacity of approximately 33,305 spectators. The club has a strong connection with the city of Mainz and is recognised for its distinctive red-and-white colours and passionate supporter community. Beyond its senior men's team, Mainz 05 operates women's football, youth football and other sporting activities. Its wider association includes handball and table tennis, while its youth performance centre provides structured training and development opportunities for young footballers. The club's development system supports players across different age groups through coaching, scouting, analysis and competitive programmes. Mainz 05 also operates the 05ER Fußballschule, which offers football-related activities and training opportunities for children and young people. Community engagement and social responsibility form an important part of the organisation's activities. Through its CSR and sustainability department, the club supports projects relating to inclusion, education, social participation and environmental responsibility. The club also promotes initiatives designed to connect professional football with the local community and encourage participation in sport. Its registered headquarters are located at Isaac-Fulda-Allee 5, 55124 Mainz, Germany. The organisation is registered with the Mainz association register under number VR 1008. With its long sporting history, youth development structure and community involvement, 1. FSV Mainz 05 remains an important sporting institution in the Mainz region and a recognised participant in German professional football.