| Unit Name: | 40th Regiment Royal Artillery |
| Dates: | 1 April 1947 – December 2012 |
| Type: | Artillery |
| Role: | Field artillery |
| Size: | 4 Batteries |
| Command Structure: | 19 Light Brigade |
| Garrison: | Thiepval Barracks, Lisburn, Northern Ireland |
| Nickname: | The Lowland Gunners |
| Equipment: | eighteen L118 Light Guns, MSTAR radars |
| Battles: | Suez Crisis EOKA Indonesia-Malaysia confrontation Falklands War Yugoslav Wars Gulf War Iraq War (Op TELIC) Afghanistan War (Op HERRICK) |
| Identification Symbol: | Clan Home |
| Identification Symbol Label: | Tartan |
40th Regiment Royal Artillery – The Lowland Gunners – was a regiment of the Royal Artillery in the British Army. It supported 19 Light Brigade in the field artillery role. It was structured into Fire Support Teams equipped with MSTAR, and the regiment's three gun batteries, equipped with eighteen L118 Light Guns. The Clan Home tartan was worn by the regiment.[1]
The regiment, formed in April 1947, was based at Home Lines, Thiepval Barracks, Lisburn, County Antrim. Following the 2010 SDSR review, it was announced in July 2011 that 40 Regt would disband along with elements of 19 Light Brigade.[2]
129 (Dragon) Battery RA was previously part of the regiment, and has since resubordinated to 4th Regiment RA as a Tactical Group Battery, comprising Fire Support Teams (forward observation parties) that support manoeuvre formations.