Hugo E. Rossi (born 1935)[1] is an American mathematician working in complex analysis.

Rossi graduated from the City College of New York with bachelor's degree in 1956, and graduated from Massachusetts Institute of Technology with the master's degree in 1957, and received a Ph.D. under the supervision of Isadore Singer in 1960 (Maximality of algebras of holomorphic functions).

[3] In 1989 Rossi went on temporary leave from his post as dean to serve as director of the National Cold Fusion Institute.

[4] Amid increasing concerns about the lack of conclusive results regarding cold fusion, Rossi resigned and returned to his post as dean of the College.

[6] He served as chairman of the board of the Mathematical Sciences Research Institute from 1985 to 1989 and twice as deputy directory, from 1997 to 1995 and 2003 to 2005.