- Source: 1921 West Down by-election
- Prabowo Subianto
- Britania Raya
- Douglas MacArthur
- Orang Australia
- Dwight D. Eisenhower
- Demokrasi sosial
- Perang Nagorno-Karabakh
- Keterlibatan Amerika Serikat dalam pergantian rezim
- Bernie Sanders
- 1921 West Down by-election
- 1921 Lewisham West by-election
- 1921 Mid Down by-election
- 1922 West Down by-election
- 1921 Penistone by-election
- List of ministerial by-elections to the Parliament of the United Kingdom
- 1921 Abingdon by-election
- 1921 Hertford by-election
- 1921 Bedford by-election
- West Down (UK Parliament constituency)
The 1921 West Down by-election to the Westminster parliament was held on 5 July 1921. The by-election was held due to the appointment as Recorder of Belfast of the incumbent UUP MP, Daniel Martin Wilson. The UUP candidate Thomas Browne Wallace was elected unopposed.