| Office: | Members of Parliament |
| Office2: | Lord Mayor of Dublin |
| Constituency: | Meath |
| Term Start: | 1884 |
| Term End: | 1885 |
| Party: | Home Rule League |
| Termstart2: | 1884 |
William Meagher (died 24 March 1897) was an Irish businessman and politician, who represented Meath for the Home Rule League in 1884–1885.
Meagher was a prominent Dublin wine merchant and vintner, who was elected to the city council as alderman for the North Dock Ward. He held the post for several years before becoming Lord Mayor of Dublin in 1884.[1] [2] That same year, he was elected to Parliament in a by-election in Meath after the incumbent, Robert Henry Metge, resigned.[3] He was elected unopposed as a Home Rule League candidate.[4] He did not seek re-election at the 1885 general election.