Nadezhda Teffi, known simply as Teffi, (Russian: Наде́жда Тэ́ффи) (21 May [O.S. 9 May] 1872, Saint Petersburg - 6 October 1952, Paris) was a Russian humorist writer. Teffi is a pseudonym. Her real name was Nadezhda Aleksandrovna Lokhvitskaya (Наде́жда Алекса́ндровна Лoхви́цкая) after her marriage Nadezhda Alexandrovna Buchinskaya (Бучи́нская). Together with Arkady Timofeevich Averchenko she was one of the most prominent authors of the Satiricon magazine.
Her birthday in various sources varies in the range 1871-1876. The most recent findings say that she was born in May 1872. Teffi's sister Mirra Lokhvitskaya (1869–1905) was a notable Russian poet.
She had to leave Russia after the October Revolution, and died after decades of immigration in Paris, France. She is buried at Sainte-Geneviève-des-Bois Russian Cemetery in France.