Pietro Nenni, Italian journalist and politician, Secretary of the Italian Socialist Party (died 1980)

Pietro Sandro Nenni was an Italian socialist politician and statesman, the national secretary of the Italian Socialist Party (PSI) and senator for life since 1970. He was a recipient of the Lenin Peace Prize in 1951. He was one of the founders of the Italian Republic and a central figure of the Italian political left from the 1920s to the 1960s.

February 9 is the 40th day of the year in the Gregorian calendar; 325 days remain until the end of the year.