Alexander Matveevich Poniatoff (Russian: Александр Матвеевич Понятов, tr.
Aleksándr Matvéjevič Ponjatóv; 25 March 1892 – 24 October 1980) was a Russian-born American electrical engineer.
Poniatoff was born in 1892 in Russkaya Aysha, Kazansky District, Kazan Governorate, Russian Empire.
The high-frequency bias technique, which made quality recording possible, was invented by Telefunken engineers and put into practical use by Poniatoff.
Poniatoff served as president of Ampex until 1955, when he was elected chairman of the board.