Piet Alexander Tallo (27 May 1942 – 25 April 2009) was an Indonesian politician.

He was governor of East Nusa Tenggara in 1998–2008.

He received a law degree from the Gadjah Mada University in 1970.

Tallo also served as regent of South Central Timor Regency in 1983–1993.

Tallo died from an acute asthma attack on 25 April 2009.