The tournament began on 4 January 1930 and concluded on 17 March with the final held at Dalymount Park, Dublin.
An official attendance[B] of 17,000 people watched Shamrock Rovers claim the second of five FAI Cup titles in a row by defeating Brideville with a controversial late goal.
^ Attendances were calculated using gate receipts which limited their accuracy as a large proportion of people, particularly children, attended football matches in Ireland throughout the 20th century for free by a number of means.
C. ^ a Fixture abandoned due to bad weather.
Re-Fixture played on 8 January.