The Ballymena-born Conservative MP pledged his allegiance to King Charles III of Ulster Scots.
MP for Bolton North East, Mr Logan shared a video of his swearing-in on Twitter.
He added: “Houldin the Irish Gaelic Bible, spoken in Ulster Scots representing the great people of Bolton, our United Kingdom #uk #parliament #houseofcommons #languages some call #dialect #family.”
Asked by a Twitter user whether it was dialect or language, Mr Logan replied: “Let the debate begin.”
It is not known when MPs from Northern Ireland spoke in Ulster Scots when they were sworn in.
Among Cabinet ministers to pledge themselves to the King, Welsh Secretary Robert Buckland later took the oath twice – once in English and once in Welsh.
Also known as Ulster Scotch and Ullans, Ulster Scots is a dialect of Scots spoken in parts of Ulster, Northern Ireland.
It is generally considered a dialect or group of dialects of Scots, although groups such as the Ulster-Scots Language Society and the Ulster-Scots Academy consider it a language in its own right.
A Queen’s University Belfast law graduate, Mr Logan was elected Member of Parliament for Bolton North East in 2019.
He later said his “single priority” shortly after taking office was to lead Bolton North East through Covid-19.
The Antrim man said he was “absolutely committed” to bringing more police to Bolton’s streets, as well as more funding for the NHS and significant money for schools across the constituency.
Underpinning all these vital investments, he believes the economy needs to grow by inspiring the next generation of entrepreneurs and attracting more foreign investment into Bolton.
Mr Logan said he was not a career politician, having worked in business before and after serving the UK in the Foreign Office.
He is a senior executive in a multinational company, and most recently a senior director in a management consultancy.
He believes that many people in Parliament have worked too long in “politics and the London bubble” and thus become detached from the realities of life in modern Britain.