The club was founded on 9 June 1905 when a number of youth clubs in south-east London, including East Street Mission and Blundell Mission, combined to form Charlton Athletic.
Klub ini ditemukan pada tanggal 9 June 1905, saat sejumlah klub-klub pemuda di daerah tenggara London, termasuk East Street Mission dan Blundell Mission bergabung dan membentuk Charlton Athletic.