Le Silex, Contemporary music venue in Auxerre, France

Le Silex is a concert venue in Auxerre equipped for musical performances of various kinds. The facility features professional sound equipment and can reconfigure its audience layout depending on the event.

Built between 2007 and 2009 on the banks of the Yonne near the station, Le Silex was inaugurated on 21 January 2010 with three evenings of concerts by Babylon Circus, Mass Hysteria, Pony Pony Run Run and Rom Garneur. The city of Auxerre entrusted its management to the association Service Compris through a public service delegation. On 16 October 2013 the venue received the Scène de Musiques Actuelles (SMAC) label from the Ministry of Culture.

The name refers to flint: the triangular windows, the colours of the exterior materials and the nearby former archaeological dig site. Since 2013 the hall has held the Scène de Musiques Actuelles label and serves as the Burgundy branch of the Inouïs du Printemps de Bourges, hosting nearly 100 concerts per season.

Le Silex stands on the edge of the Yonne, near Auxerre station and next to the Conservatoire à rayonnement départemental, in the Rive Droite district a short walk from the centre. The main hall holds 500 people (100 seated); the club holds 200 standing, 120 mixed or 80 seated. The building dates from 2007–2009.

The building's geothermal system, installed between 2007 and 2009, draws heat and cold from the ground through a water-to-water heat pump using pipes built into the foundation piles, cutting CO2 emissions by 82%. Only three buildings of this size existed worldwide with such a pilot installation in 2009.