Andrzej Sołtan (25 October 1897 – 10 December 1959) was a Polish nuclear physicist. He also worked on spectroscopy in the band between far ultraviolet and X-rays. During his visit to Caltech in 1932–33, together with H. Richard Crane and Charles Christian Lauritsen, he discovered a method for producing neutron beams, by bombarding lithium or beryllium nuclei with accelerated deuterons.^[1][2]

He was appointed professor at Warsaw University in 1947, a member of the Polish Academy of Sciences in 1952, and in 1955 he became the first director of the Institute of Nuclear Studies [pl] in Świerk, Otwock County near Warsaw, now known as the National Centre for Nuclear Research.^[3] He served as president of the Polish Physical Society between 1952 and 1955.

He is buried (with his wife Marta, also a physicist) in the "Avenue of the Meritorious" of Warsaw's Powązki Cemetery.^{[citation needed]}

The institute where he worked was renamed the Soltan Institute of Nuclear Studies in 1982.