The priest was forced to resign from St Peter’s Cathedral in west Belfast in 2015 over the affair but was later appointed chaplain at Maghaberry Prison.
He is pictured on page seven of the council’s residents mag as part of an article around the Northern Ireland Prison Service receiving the Freedom of the Borough.
Despite featuring prominently in the image, he is not named in the piece and there is no photo caption.
A former parishioner said he was “shocked” to see Dallat pictured in the magazine, adding: “After what he got up to at the parish, for him to be paraded by the council and the prison service, I couldn’t believe it.
“What he did to that woman was awful and highly unbecoming of a priest, yet here he is at this fancy ceremony. He has no shame.”
A spokesman for the council said: “The Northern Ireland Prison Service determined who attended the Freedom of The Borough event on their behalf.”
A spokesperson for the Prison Service said: “Fr Ciaran is a much-respected and valued member of the prison chaplaincy team.
“He has given pastoral care to many prisoners in Maghaberry, and his support has helped them through times of turmoil and crisis. That work often goes unseen and we want to thank him for everything he has done and continues to do at the prison.”
Fr Dallat was lavished with £20k worth of gifts by his lover only to cast her aside in 2014 when she became pregnant.
The affair, revealed exclusively by Sunday Life the following year, led to Dallat resigning from St Peter’s, having previously served at Sacred Heart parish in north Belfast.
The priest became chaplain at Maghaberry Prison in 2016 despite opposition to the appointment due to the scandal.
He was branded a hypocrite in 2015 by the woman who miscarried his baby having showered him with £20,000 worth of gifts.
Details of Fr Dallat’s steamy two-year affair with ‘Linda’, during which she claims they had almost daily sex sessions, rocked the Catholic Church at the time.
Speaking to Sunday Life, she said on the night they first slept together, the then administrator at St Peter’s Cathedral walked into her hotel room during a holy pilgrimage and said: “Take your clothes off.”
She also claimed to have miscarried his child in 2013 after a five-week pregnancy.
Fr Dallat would later dump his girlfriend two weeks after her beloved mother passed away in April 2014.
Explaining his reasons for ending the affair, he claimed it came in a message from God.
Linda told Sunday Life she would have sex with Fr Dallat “three to four times” per week between September 2012 and April 2014.
During that period the 49-year-old said she spent £20,000 on the man she thought was her lover, but had “used her for sex”.
Remarkably, some of his parishioners stood by him at the time and scorned the press for reporting the affair.
“He groomed me, he preyed on me, and then he betrayed me,” said the north Belfast businesswoman at the time, who described the priest as an “experienced” lover.