The parade formed up outside the Royal British Legion in Thomas Street, where sprigs of shamrock were presented to the veterans on parade.
A short service was held, after which the parade made its way through the town accompanied by St Mark’s Band.
The Lord Mayor, Alderman Margaret Tinsley and a military VIP took the salute before the parade returned back to Thomas Street.
Afterwards those who were on parade received a traditional shot of rum and enjoyed an afternoon of celebration with traditional St Patrick’s Day food and entertainment, including music, Irish dancing and piping in the Legion function rooms.
Photographer Tony Hendron captured some of the atmosphere of this popular annual occasion.
9. Portadown RBL St Patrick's Day parade
St Mark's Silver band leading the annual RBL St Patrick's Day parade in Portadown town centre on Saturday afternoon. PT12-208. Photo: Tony Hendron
10. Portadown RBL St Patrick's Day parade
RBL standard bearers on parade at the Portadown RBL St Patrick's Day parade. PT12-209. Photo: Tony Hendron
11. Portadown RBL St Patrick's day parade
Parade commander, Lt Col {Ret'd} DJ Robinson MBE, left, pictured during Saturday's Portadown RBL St Patrick's day parade with veterans who took part. pt12-210. Photo: Tony Hendron
12. Portadown RBL St Patrick's Day parade
Some of the spectators who braved the bad weather to attend the annual RBL St Patrick's Day parade in Portadown town centre on Saturday.Included are from left, Lynsey Vennard, Mandy Crooks and husband, Eddie. PT12-200. Photo: Tony Hendron