More than 30 years
1- Obiang, 76, has been the head of tiny, oil-rich Equatorial Guinea for 39 years.
He came to power in a coup in August 1979 and was elected to a fifth seven-year term in 2016.
2- Cameroon’s Biya became president in November 1982.
3- Congo-Brazzaville President Denis Sassou Nguesso has spent 34 years in office, but not in one go.
He first served from 1979 to 1992 and returned in 1997 at the end of a civil war.
Sassou Nguesso was re-elected in March 2016.
4- In Uganda, Yoweri Museveni has been in power for 33 years.
He took office in January 1986 after winning the war that ousted brutal dictator Idi Amin Dada.
He was elected to a fifth term in February 2016.
5- In southern Africa’s tiny eSwatini, the former Swaziland, King Mswati III is the continent’s last absolute monarch.
He took the throne in April 1986, more than 32 years ago.
Topping 25 years
1- In Sudan, Omar al-Bashir has ruled for 29 years after staging a coup in June 1989.
2- Chad’s Idriss Deby took over the northern nation in 1990, giving him nearly 28 years in power.
He won a disputed fifth term in April 2016.
3- The Eritrean leader Isaias Afwerki has been in charge since independence in April 1993, making 25 years.