Sao Tome and Principe is the 70 least corrupt nation out of 180 countries, according to the 2025 Corruption Perceptions Index reported by Transparency International. Corruption Rank in Sao Tome and Principe averaged 78.47 from 2007 until 2025, reaching an all time high of 121.00 in 2008 and a record low of 62.00 in 2016. source: Transparency International