Nundinae

thumb|A fragment of the Fasti Praenestini for the month of [[Aprilis, showing its nundinal letters on the left side]] thumb|The full remains of the Fasti Praenestini

The nundinae (, ), sometimes anglicized to nundines, were the market days of the ancient Roman calendar, forming a kind of weekend including, for a certain period, rest from work for the ruling class (patricians).