President of Somalia in the context of Aden Abdullah Osman Daar

Mohammed Siad Barre (Somali: Maxamed Siyaad Barre; Arabic: محمد زياد بري, romanized: Muhammad Ziād Barīy; c. 6 October 1919 – 2 January 1995) was a Somali military officer, politician, and revolutionary who served as the third president of Somalia from 21 October 1969 to 26 January 1991.

Barre, the commander of the Somali National Army, became president of Somalia after the 1969 coup d'état that overthrew the Somali Republic following the assassination of President Abdirashid Shermarke. The Supreme Revolutionary Council military junta under Barre reconstituted Somalia as a one-party Marxist–Leninist communist state, renamed the country the Somali Democratic Republic and adopted scientific socialism. Barre spoke three languages, English, Somali and Italian.

The Somali Armed Forces are the military forces of the Federal Republic of Somalia. Headed by the president as commander-in-chief, they are constitutionally mandated to ensure the nation's sovereignty, independence and territorial integrity.

In 1990 the Armed Forces were made up of the Army, Air Force, Air Defence Force, and Navy. From the early 1960s to 1977, the periodwhen good relations existed between Somalia and the Soviet Union, the Armed Forces had the largest armored and mechanized force in sub-Saharan Africa. Due to Barre's increasing reliance on his own clan, splitting the Armed Forces along clan lines, and the Somali Rebellion, by 1988 they began to disintegrate. By the time President Siad Barre fled Mogadishu in January 1991, the last cohesive army grouping, the 'Red Berets,' had deteriorated into a clan militia.

Abdirashid Ali Sharmarke (Somali: Cabdirashiid Cali Sharmaarke, Arabic: عبد الرشيد علي شرماركي) (8 June 1919 – 15 October 1969), was the first Prime Minister of the Somali Republic from 12 July 1960 to 14 June 1964 and the second President from 6 July 1967, until his assassination on October 15, 1969.

The president of Somalia (Somali: Madaxaweynaha Soomaaliya) is the head of state of Somalia. There have been 9 official presidents since the office was created in 1960. The president is also the commander-in-chief of the Somali Armed Forces. The current office holder is Hassan Sheikh Mohamud, having been elected in the 2022 presidential election. He is the first person to have held the office on multiple occasions, having been previously elected in the 2012 presidential election and held the office from 2012–2017.

Abdullahi Yusuf Ahmed (Somali: Cabdulaahi Yuusuf Axmed, Arabic: عبدالله يوسف أحمد‎; 15 December 1934 – 23 March 2012), was a Somali politician and former military official who served as the first President of Puntland from 1998 to 2004. He also played a key role in establishing the Transitional Federal Government (TFG), which he led as President of Somalia from 2004 to 2008. Additionally, he was one of the founders of the rebel Somali Salvation Democratic Front (SSDF).

Yusuf was a career soldier in the Somali National Army, participating in the 1964 Border War and Ogaden War against Ethiopia. After Somalia's defeat in the Ogaden War in 1978, he led a failed coup against President Siad Barre, marking the start of the Somali rebellion. Following the coup's failure, Yusuf established the Somali Salvation Democratic Front in Ethiopia and began fighting alongside Ethiopian forces against the Somali army. During the 1982 Ethiopian-Somali War, he led SSDF forces. Frustrated by the operation's failure and the SSDF's surrender to the Somali government, the Ethiopians jailed Yusuf until the Derg regime collapsed in 1991.

The Federal Government of Somalia (FGS; Somali: Dowladda Federaalka Soomaaliya, DFS; Arabic: الحكومة الفيدرالية الصومالية) is the internationally recognised government of Somalia, and the longest running attempt to create a central government in Somalia since the collapse of the Somali Democratic Republic in 1991. It replaced the Transitional Federal Government (TFG) of Somalia on 20 August 2012 with the adoption of the Constitution of Somalia.

It officially comprises the executive branch of government, with the parliament serving as the legislative branch. It is headed by the president of Somalia, to whom the Council of Ministers reports through the prime minister.

Hassan Sheikh Mohamud (Somali: Xasan Sheekh Maxamuud; Arabic: حسن شيخ محمود, romanized: Ḥasan Shaykh Muḥamūd; born 29 November 1955) is a Somali politician serving as the president of Somalia since 15 May 2022. He previously held the office from 2012 to 2017.

Hassan was previously a university professor and dean at SIMAD University, which he co-founded. During 2012 he was elected President of the Transitional Federal Government (TFG). Time magazine placed him on an annual list of the 100 most influential people in the world in 2013. During 2014 he controversially welcomed the entry of Ethiopian troops into the African Union mission in the wake of the 2006 invasion. His first administration faced serious criticism for rampant corruption, media restrictions and abuse of power.