206 (Ulster) Battery Royal Artillery is an Army Reserve sub-unit, part of the 105th Regiment Royal Artillery.

The battery is spread between two locations, Newtownards and Coleraine.

Formed on 1 April 1967 as 206 (Coleraine) Light Air Defence Battery Royal Artillery (Volunteers) from 245 (Ulster) Light Air Defence Regiment RA (TA), the battery was originally part of 102 (Ulster and Scottish) Light Air Defence Regiment Royal Artillery (Volunteers).

[1] On 1 April 1993 the battery transferred to 105 (Scottish) Air Defence Regiment Royal Artillery (Volunteers) after the disbandment of 102 Regiment.

[4] It carries the honour of firing regular royal salutes at Hillsborough Castle.