Stanley Gerald Thompson (1912–1976) was an American chemist.

He discovered together with Glenn T. Seaborg several of the transuranium elements.

Thompson was also a leader of the research teams that discovered the next three transuranium elements: einsteinium, fermium and mendelevium (atomic numbers 99, 100 and 101).

[1] He received Guggenheim Fellowships (Natural Sciences - Chemistry) in 1954 and 1965.

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