A Flea in Her Ear (French: La Puce à l'oreille) is a play by Georges Feydeau written in 1907, at the height of the Belle Époque.

[1] The plot hinges on the central characters having a double: a middle class businessman is indistinguishable from the hall porter of a shady hotel, and the two are persistently mistaken for each other, to the bafflement of both.

[2] Les Annales du théâtre et de la musique said of the play, "It is a piece for which we need to invent a new description: funny, pleasing, comical, frenzied, dizzying, it is all those, and more.

Raymonde Chandebise, after years of wedded bliss, begins to doubt the fidelity of her husband, Victor Emmanuel, who has suddenly become sexually inactive.

They write him a letter, in Lucienne's handwriting, from a fictitious and anonymous admirer, requesting a rendezvous at the Hotel Coq d'Or, an establishment with a dubious reputation, but a large and prominent clientele.

When Victor Emmanuel receives the letter he has no interest in such an affair and believes the invitation from the mysterious woman was meant for his best friend Tournel, a handsome bachelor.

The first revival, forty-five years after the first production, was at the Théâtre Montparnasse, Paris, on 14 November 1952, directed by Georges Vitaly, with Pierre Mondy in the dual role of Victor-Emmanuel and Poche.

[10] Although La Dame de chez Maxim remains the favourite with French audiences, in English-speaking countries A Flea in Her Ear has become the most popular of Feydeau's plays.

[27] As "Ψύλλοι στ' αυτιά" (Psili St' Aftia), the play was premiered in Greece in 1976, directed by Dinos Iliopoulos, and has been revived in productions by Minos Volanakis (1984 and 1998), George Kimoulis (2006) and Yannis Kakleas (2013).

[28] Mondy's portrayal of Chandebise/Poche was captured in a 1956 French television production directed by Stellio Lorenzi, alongside Albert Rémy (Camille), Alfred Adam (Finache), Robert Manuel (de Histangua), Louis de Funès (Ferraillon), Pascal Mazzotti (Étienne), Marthe Mercadier (Raymonde), and Suzanne Dantès (Olympe), released on DVD in 2008.