Olivetti S.p.A. is an Italian manufacturer of typewriters, computers, tablets, smartphones, printers and other commercial products such as calculators and fax machines. Based in Ivrea, in the Metropolitan City of Turin, the company has been part of the Telecom Italia Group since 2003.

In the past, it has been one of the most important companies in the field of typewriters, computers and electronics. The first programmable commercial "desktop", Programma 101, was produced by Olivetti in 1964 and was a commercial success.

Among its most important products are Elea 9003 and Program 101: Elea can be considered the first computer with a complete transistor; the second was the first personal computer from which current personal computers (PCs) are derived.