Alexandru Froda (July 16, 1894 – October 7, 1973) was a Romanian mathematician with contributions in the field of mathematical analysis, algebra, number theory and rational mechanics.

His first important result[3] was concerned with the set of discontinuities of a real-valued function of a real variable.

In this theorem Froda proves that the set of simple discontinuities of a real-valued function of a real variable is at most countable.

In the same year[6] Froda proved that, in the case that the conjecture is true, the condition that the function is defined on the whole plane is indispensable.

Using this result Froda finds a new way of looking at an older problem[7] posed by Mikhail Lavrentyev in 1925, namely whether there is a function of two real variables such that the ordinary differential equation