The 1922 North Down by-election was held on 21 July 1922. The by-election was held due to the assassination of the incumbent UUP MP, Henry Wilson who had been elected in the February 1922 North Down by-election. It was won unopposed by the UUP candidate John Simms. [1]
| Party | Candidate | Votes | % | ±% | |
|---|---|---|---|---|---|
| UUP | John Simms | Unopposed | |||
| Registered electors | |||||
| UUP hold | |||||