Editing List of IOC country codes (section)

=== Obsolete codes ===
Unlike the previous list, these codes no longer appear in the IOC results database. When a past athlete from one of these teams has won a medal, the new code is shown next to them instead.

{| class="wikitable sortable"
|-
!  Code
!  Nation (NOC)
!  Years
! Notes
|-
| style="text-align:center;" | {{mono|BIR}} || {{flag|Burma|1974}}<br />From French ''Birmanie''|| 1948–1988 || Now {{flag IOC team|MYA}}
|-
| style="text-align:center;" | {{mono|CEY}} || {{flag IOC|CEY}} || 1948–1972 || Now {{flag IOC team|SRI}}
|-
| style="text-align:center;" | {{mono|DAH}} || {{flag IOC|DAH}} || 1964–1976 || Now {{flag IOC team|BEN}}
|-
| style="text-align:center;" | {{mono|GUI}} || {{flag|British Guiana}} || 1948–1964 || Now {{flag IOC team|GUY}}.<br /> ''The code former GUI has been reassigned to {{flag IOC team|GUI}} in 1965 when its new NOC was recognized by the IOC and used publicly in their first competed games in 1968.'' All formerly known by BGU<ref name=IAAF2015 />
|-
| style="text-align:center;" | {{mono|HBR}} || {{flag IOC|HBR}}<br />From French ''Honduras britannique'' || 1968–1972 || Now {{flag IOC team|BIZ}}
|-
| style="text-align:center;" | {{mono|IHO}} || {{flag|Dutch East Indies|}}<br />code from French ''Indes orientales hollandaises'' || 1934–1938 || Now {{flag IOC team|INA}}
|-
| style="text-align:center;" | {{mono|KHM}} || {{flag IOC|KHM}}<br />From French ''République khmère''|| 1972 || Now {{flag IOC team|CAM}}
|-
| style="text-align:center;" | {{mono|MAL}} || {{flag|Malaya}}<br />From French ''Malaisie''|| 1956–1960 ||rowspan="2" | Competed independently before the formation of [[Malaysia]] in 1963.<br /> Now {{flag IOC team|MAS}}
|-
| style="text-align:center;" | {{mono|NBO}} || {{flag IOC|NBO|1956 Summer}} || 1956
|-
| style="text-align:center;" | {{mono|NRH}} || {{flag IOC|NRH}} || 1964 || Now {{flag IOC team|ZAM}}
|-
| style="text-align:center;" | {{mono|RAU}} || {{flaglink|United Arab Republic|at the 1960 Summer Olympics}}<br />code from French ''République arabe unie'' || 1960 || colspan=2 | Now {{flag IOC team|EGY}} and {{flag IOC team|SYR}}
|-
| style="text-align:center;" | {{mono|RHO}} || {{flag IOC|RHO}}<br />also [[Southern Rhodesia]] and [[Federation of Rhodesia and Nyasaland]] until it became [[Zimbabwe]] in 1980 || 1960–1972 || Now {{flag IOC team|ZIM}}
|-
| style="text-align:center;" | {{mono|ROC}} || {{flag IOC|ROC}} || 1932–1976 || Medal winners from 1948 and earlier display as {{flag IOC team|CHN}}, while medal winners from after 1948 display as {{flag IOC team|TPE}} under which the team now competes.
|-
| style="text-align:center;" | {{mono|RU1}} || {{flag IOC|RU1}} || {{hlist|1900|1908–1912}} || Now {{flag IOC team|RUS}}
|-
| style="text-align:center;" | {{mono|SAA}} || {{flag IOC|SAA}} || 1952 || Competed independently before rejoining {{flag IOC team|FRG}} in 1957
|-
| style="text-align:center;" | {{mono|UAR}} || {{flag IOC|UAR}} || 1964–1968 || Now {{flag IOC team|EGY}}
|-
| style="text-align:center;" | {{mono|VOL}} || {{flag IOC|VOL}} || 1972–1984 || Now {{flag IOC team|BUR}}
|-
| style="text-align:center;" | {{mono|WSM}} || {{flag IOC|WSM}} || 1984–1996 || Now {{flag IOC team|SAM}}
|-
| style="text-align:center;" | {{mono|YAR}} || {{flag IOC|YAR}}<br />code from ''Yemen Arab Republic'' || 1984–1988 ||rowspan=2 | Competed independently before [[Yemeni unification]] in 1990.<br />Now {{flag IOC team|YEM}}
|-
| style="text-align:center;" | {{mono|YMD}} || {{flag IOC|YMD|1988 Summer}}<br />code from ''Yemen Democratic Republic'' || 1988
|-
| style="text-align:center;" | {{mono|ZAI}} || {{flag|Zaire}}<br />From French ''Zaïre''|| 1972–1996 || Now {{flag IOC team|COD}}
|}

Two other significant code changes have occurred, both because of a change in the nation's designation as used by the IOC:
* '''HOL''' was changed to '''NED''' for the [[Netherlands]] for the 1992 Games, reflecting the change in designation from ''Holland''.
* '''IRN''' was changed to '''IRI''' for [[Iran]] for the 1992 Games, reflecting the change in designation to ''Islamic Republic of Iran''.