A Lady of Little Sense, The Lady-Fool, or The Stupid Lady (La dama boba) is a 1613 comedy by the Spanish playwright Lope de Vega. It is one of the earliest examples of the "comedia palatina" subgenre. De Vega completed it on 28 April 1613, as shown by a surviving manuscript copy in his own hand.
Harry Turtledove's alternate history novel Ruled Britannia, in which Vega is a central character, depicts him writing the play in 1598, 15 years before he is generally accepted to have written it. This is an apparent butterfly effect of this alternate history's inner logic.