According to Official Guinness Records,
The most consecutive Olympic gold medals won in the 100 metres (male) is 3, achieved by Usain Bolt (Jamaica) at the Beijing 2008, London 2012, and Rio 2016 Olympics.Bolt has 7 Olympic gold medals in total including two in the 200 metres and a further two in the 4 x 100 metre relay.
For a complete list of 2016 records, please visit 2016 Guinness Records in Brazil.