This is a complete list of Kings, Heads of State and Presidents of Cambodia

Kings of Cambodia (6th century-1960)

 6th century: Bhavavarman I
 6th century: Mahendravarman
 7th century: Isanavarman I
 7th century: Bhavavarman II
 7th century: Jayavarman I
 8th century: Queen Jayavedi
 Reign unknown: Sambhuvarman
 Reign unknown: Pushkaraksha
 8th century: Sambhuvarman
 8th century: Rajendravarman I
 Reign unknown: Mahipativarman
 802-850: Jayavarman II
 850-877: Jayavarman III
 877-889: Indravarman I
 889-900: Yasovarman I
 900-922: Harshavarman I
 922-928: Isanavarman II
 928-942: Jayavarman IV
 942-944: Harshavarman II
 944-968: Rajendravarman II
 968 - 1001: Jayavarman V
 1001-1002: Udayadityavarman I
 1002: Jayaviravarman
 1002-1050: Suryavarman I
 1050-1066: Udayadityavarman II
 1066-1090: Harshavarman III
 1090-1107: Jayavarman VI
 1107-1113: Dharanindravarman I
 1113-1150: Suryavarman II

The Angkor Wat was built.

 1150-1160: Dharanindravarman II
 1160-1166: Yasovarman II
 1166-1177: Tribhuvanadityavarman

From 1177 to 1181, Cham invasion and period of anarchy.

 1181-1219: Jayavarman VII
 1219-1243: Indravarman II
 1243-1295: Jayavarman VIII
 1295-1308: Indravarman III
 1308-1327: Indrajayavarman
 1327-1353: Jayavarman Paramesvara

The throne was vacant from 1353 to 1362.

 1362-1369: Nippean Bat

From 1369 to 1375, Siam ruled. From 1369 to 1371, the throne was vacant.

 1371 - ?: Kalamegha
 14th century: Kambujadhitaja
 14th century: Dharmasokaraja

In the 14th century, ownership of Cambodia passed to Siam, until 1389.

 1389-1404: Ponthea Yat
 1404-1429: Narayana Ramadhipati
 1429-1444: Sri Bodhya

In 1431, Siam defeated and crushed the Angkorean Empire. Nonetheless, The monarchy is not harmed, and Siam withdrawed. The capital (and the royal family) moved from Angkor to Phnom Penh.

 1444-1486: Dharmara Jadhiraja
 1486-1512: Sri Sukonthor
 1512-1516: Ney Kan
 1516-1566: Ang Chan I
 1566-1576: Barom Reachea I
 1576-1594: Chettha I

In 1594, the Siamese captured Phnom Penh, yet the monarchy continued to rule.

 1594-1596: Reamea Chung Prey
 1596-1599: Barom Reachea II
 1599-1600: Barom Reachea III
 1600-1603: Chau Ponhea Nhom
 1603-1618: Barom Reachea IV
 1618-1622: Chettha II
 1622-1628: Interregnum: Civil strife
 1628: Ponhea To
 1628-1630: Outey
 1630-1640: Ponhea Nu
 1640-1642: Ang Non I
 1642-1659: Chan
 1659-1672: Barom Reachea V
 1672-1673: Chettha III
 1673-1674: Ang Chei
 1674-1675: Ang Non
 1675-1695: Chettha IV (first reign)
 1695-1699: Outey I
 1699-1701: Ang Em (first reign)
 1701-1702: Chettha IV (second reign)
 1702-1703: Thommo Reachea II (first reign)
 1703-1706: Chettha IV (third reign)
 1706-1710: Thommo Reachea III (second reign)
 1710-1722: Ang Em (second reign)
 1722-1738: Satha II
 1738-1747: Thommo Reachea II (third reign)
 1747: Thommo Reachea III
 1747-1749: Ang Tong (first reign)
 1749-1755: Chettha V
 1755-1758: Ang Tong (second reign)
 1758-1775: Outey II
 1775-1796: Ang Non II
 1796-1806: Interregnum: Vietnamese and Siamese do not allow King Ang Chan II to be crowned
 1806-1837: Ang Chan II
 1837-1847: Queen Ang Mey
 1841-1860: Ang Duong
 1860-1904: Norodom
 1904-1927: Sisowath
 1927-1941: Sisowath Monivong
 1941-1955: Norodom Sihanouk
 1955-1960: Norodom Suramarit

Leaders of Cambodia (1960-1993)

Heads of State of Cambodia (1960-1972)
 3 April-6 April 1960: Chuop Hell (1st time, acting)
 6 April-13 June 1960: Prince Sisowath Monireth (chairman Regency Council)
 13 June-20 June 1960: Chuop Hell (2nd time, acting)
 20 June 1960-18 March 1970: Prince Norodom Sihanouk (1st time)
 18 March 1970-10 March 1972: Cheng Heng
 10 March-14 March 1972: General Lon Nol

Presidents of the Khmer Republic (1972-1975)
 14 March 1972-12 April 1975: General Lon Nol
 1 April-12 April 1975: Saukham Khoy (acting for Lon Nol)
 12 April-17 April 1975: Sak Sutsakhan (chairman Supreme Committee)

Head of State of Cambodia (1975-1976)
 17 April 1975-11 April 1976: Prince Norodom Sihanouk (2nd time)

Chairman of the State Presidium (1976-1979)
 11 April 1976-7 January 1979: Khieu Samphan

President of the People's Revolutionary Council (1979-1981)
 7 January 1979-27 June 1981: Heng Samrin

Chairmen of the Council of State (1981-1993)
 27 June 1981-6 April 1992: Heng Samrin
 6 April 1992-14 June 1993: Chea Sim

Chairman of the Supreme National Council (1991-1993)
 20 November 1991-14 June 1993: Prince Norodom Sihanouk

Head of State (1993)
 14 June-24 September 1993: Prince Norodom Sihanouk (3rd time)

Kingdom of Cambodia Restored (1993-Present)

 1993-2004: Norodom Sihanouk
 2004-present: Norodom Sihamoni