Guido Beck (29 August 1903 – 21 October 1988) was an Argentine physicist of German Bohemian origin, who was born in Liberec and died in Rio de Janeiro.
He discovered all cylindrically symmetric nonrotating vacuum solutions in general relativity, which is the first instance of exactly solved gravitational waves.
A combination of the troubled political climate of Europe in the 1930s, his own restlessness, and the Nazi persecutions in Germany, made the Jewish-born Beck a traveler in those years.
In 1935, Beck was invited to work in the Soviet Union by Head of the Institute of Physics, Odessa University Yelpidifor Anempodistovich Kirillov.
In 1936–1937 Beck was head of the department of theoretical mechanics at the Institute of Water Transport Engineers in Odessa.