Scotland’s newest MSP was sworn in at Holyrood after the untimely death of Alex Johnstone.
Bill Bowman, who ran for the Tories in Dundee East in the 2016 Scottish Election, will represent the North East region.
Mr Johnstone, who was first elected in 1999, passed away earlier this month.
Scottish Conservative party leader Ruth Davidson led tributes Mr Johnstone earlier this week as MSPs unanimously backed a motion of condolence.
Mr Bowman, a chartered account, who spent 20 years working in Aberdeen, recognised the “huge contribution” of his predecessor after being sworn in by Presiding Officer Ken Macintosh on Wednesday.
He said: “I feel honoured to have been sworn in as a member of the Scottish Parliament for the North East region.
“Clearly, these are not the circumstances under which I would have wanted to be elected, and I must offer tribute to the huge contribution made by the late Alex Johnstone.
“He was a tireless and dedicated campaigner for his local area and the warm words echoing around the chamber yesterday from across the political divide were testament to his character and influence.”
Mr Bowman – who worked with international firm KPMG – said he was “looking forward” to beginning his work as an MSP.
He said: “I am ready to continue Alex Johnstone’s good work, and promise to stand up for the people of the north-east and do my utmost to ensure their voice is heard at parliament.
“I said during the election campaign that we need to see growth in our economy and improvement in our education system, two areas in which the SNP are falling woefully short at the moment.
“I am looking forward to joining the Scottish Conservative team providing a strong and effective opposition at Holyrood.”
The Scottish Conservatives won four regional seats in the 2016 Holyrood election, as well as the constituency of Aberdeenshire West.
Mr Bowman was ranked six on the Tories’ North East region list in that election.