The former England international signed for Notts in the summer of 2014 following his release by Milton Keynes Dons.
Capped 19 times by his country, Smith has plenty of Premier League and Champions League experience from his time with Leeds United and Manchester United.
The 36-year-old combines his playing duties with a coaching role, though he is still a regular in the matchday squad, operating in a holding midfield berth or as a striker.
Home kit: Viv Henshaw
Away kit: Mark Coupar
Third kit: Jay Eaton
Boots & socks: Sam Neal and Bev Verney