| Surname | Civil Parish | Barony | Riding |
| Harriett | Ardmayle | Middlethird | South |
| Harrigan | Clonbullogue | Clanwilliam | South |
| Harrigan | Clonoulty | Kilmanagh Lower | South |
| Harrigan | Killardry | Clanwilliam | South |
| Harrigan | Tipperary | Clanwilliam | South |
| Harrigan | Toem | Clanwilliam | South |
| Harrigan | Toem | Kilmanagh Upper | North |
| Harrington | Ballysheehan | Middlethird | South |
| Harrington | Clonpet | Clanwilliam | South |
| Harrington | Cordangan | Clanwilliam | South |
| Harrington | Emly | Clanwilliam | South |
| Harrington | Solloghodmore | Clanwilliam | South |
| Harrington | Templebeg | Kilmanagh Upper | North |
| Harrington | Tipperary | Clanwilliam | South |
| Harrington | Upperchurch | Kilmanagh Upper | North |
| Harris | Cullen | Clanwilliam | South |
| Harris | Donohill | Kilnamanagh Lower | South |
| Harris | Kilfeakle | Clanwilliam | South |
| Harrison | Donohill | Kilnamanagh Lower | South |
| Hart | Emly | Clanwilliam | South |
| Hart | Moyaliff | Kilmanagh Upper | North |
| Hartigan | Ballysheehan | Middlethird | South |
| Hartigan | Emly | Clanwilliam | South |
| Hartigan | Relickmurry & Athassel | Clanwilliam | South |
| Hartigan | Tipperary | Clanwilliam | South |
| Hartnett | Tipperary | Clanwilliam | South |
| Hartnett | Toem | Kilmanagh Upper | North |
| Harty | Clonbeg | Clanwilliam | South |
| Harty | Cullen | Clanwilliam | South |
| Harty | Emly | Clanwilliam | South |
| Harty | Templebredon | Clanwilliam | South |
| Harty | Templebredon | Coonagh | Limerick |
| Harty | Upperchurch | Kilmanagh Upper | North |
| Haskitt | Relickmurry & Athassel | Clanwilliam | South |
| Hasset | Ballysheehan | Middlethird | South |
| Hastings | Clonpet | Clanwilliam | South |
| Haughessy | Moycarky | Eliogarty | North |
| Hawarden | Ballintemple | Kilmanagh Lower | South |
| Hawarden | Clonoulty | Kilmanagh Lower | South |
| Hawke | Donohill | Kilnamanagh Lower | South |
| Hawthorn | Cordangan | Clanwilliam | South |
| Hay | Oughterleague | Kilnamanagh Lower | South |
| Hayde | Ballysheehan | Middlethird | South |
| Hayden | Ballysheehan | Middlethird | South |
| Hayden | Clonbeg | Clanwilliam | South |
| Hayden | Donohill | Clanwilliam | South |
| Hayden | Kilfeakle | Clanwilliam | South |
| Hayden | Relickmurry & Athassel | Clanwilliam | South |
| Hayden | Templebredon | Coonagh | Limerick |
| Hayden | Toem | Kilmanagh Upper | North |
| Hayes | Ardmayle | Middlethird | South |
| Hayes | Ardmayle | Middlethird | South |
| Hayes | Ballysheehan | Middlethird | South |
| Hayes | Bruis | Clanwilliam | South |
| Hayes | Clogher | Kilmanagh Lower | South |
| Hayes | Clonbeg | Clanwilliam | South |
| Hayes | Clonbullogue | Clanwilliam | South |
| Hayes | Clonoulty | Kilmanagh Lower | South |
| Hayes | Clonpet | Clanwilliam | South |
| Hayes | Cordangan | Clanwilliam | South |
| Hayes | Corroge | Clanwilliam | South |
| Hayes | Donohill | Clanwilliam | South |
| Hayes | Donohill | Kilnamanagh Lower | South |
| Hayes | Doon | Kilmanagh Upper | North |
| Hayes | Emly | Clanwilliam | South |
| Hayes | Fertiana | Eliogarty | North |
| Hayes | Gaile | Middlethird | South |
| Hayes | Glenbane | Clanwilliam | South |
| Hayes | Holycross | Eliogarty | North |
| Hayes | Horeabbey | Middlethird | South |
| Hayes | Kilfeakle | Clanwilliam | South |
| Hayes | Killardry | Clanwilliam | South |
| Hayes | Kilmore | Kilmanagh Lower | South |
| Hayes | Kilshane | Clanwilliam | South |
| Hayes | Moyaliff | Kilmanagh Upper | North |
| Hayes | Moycarky | Eliogarty | North |
| Hayes | Oughterleague | Clanwilliam | South |
| Hayes | Oughterleague | Kilnamanagh Lower | South |
| Hayes | Rathlynin | Clanwilliam | South |
| Hayes | Relickmurry & Athassel | Clanwilliam | South |
| Hayes | Shronell | Clanwilliam | South |
| Hayes | Solloghodmore | Clanwilliam | South |
| Hayes | Templebeg | Kilmanagh Upper | North |
| Hayes | Templebredon | Clanwilliam | South |
| Hayes | Templebredon | Coonagh | Limerick |
| Hayes | Templeneiry | Clanwilliam | South |
| Hayes | Templenoe | Clanwilliam | South |
| Hayes | Tipperary | Clanwilliam | South |
| Hayes | Toem | Clanwilliam | South |
| Hayes |