Peter J. Uggowitzer (born 24 November 1950 in Klagenfurt in Austria) is an Austrian-Swiss metallurgist and materials scientist.

Uggowitzer studied materials science at the Montanuniversität Leoben until 1976, and earned his doctorate there in 1981 in the field of dual-phase steels.

[1] His scientific work includes Ni-free austenitic steels, which have found wide application in medicine and watch industries.

[2][3] In 2019, Uggowitzer and co-authors discovered that the phenomenon of ageing of aluminium alloys does not occur at the atomic scale.

[4] In late 2020, Uggowitzer and co-authors initiated the research field of radiation-resistant aluminium alloys for future space exploration.