Stade Charles-Mathon is a sports stadium located in Oyonnax, France.

With the promotion of Oyonnax to the Top14 for season 2013–14, the stadium capacity was expanded from 8,670 to 11,400 places, including 7,500 seats.

[2] The capacity went up to 11,500 for the 2018–19 season which was achieved in Oyonnax's Pro D2 semi-final against Bayonne on 18 May 2019.

[3] It takes its name from Charles Mathon, a leading player for the club before the Second World War.

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