Ms Duncan-Glancy posted a picture of her “new office” on Twitter as she arrived for the first time as an MSP, saying “here goes guys”.
As well as Ms Duncan-Glancy, arrivals from Labour include former MP Paul Sweeney and Michael Mara, brother of former North East MSP Jenny Mara.
Those from the SNP include Emma Roddick, Elena Whitham and Jenni Minto, who won Argyll and Bute for the party as incumbent Mike Russell stepped down from Holyrood.
For the Conservatives, GP Dr Sandesh Gulhane will head to Holyrood after winning a seat on the Glasgow regional list, as will Craig Hoy and Tess White.
More new MSPs arriving at Scottish Parliament
New MSPs are being inducted into the Scottish Parliament (Jane Barlow/PA)
More newly-elected MSPs are due to arrive at the Scottish Parliament on Tuesday, ahead of the official swearing-in ceremony on Thursday.
Those due to arrive on Tuesday for their induction session at Holyrood include Pam Duncan-Glancy, the first permanent wheelchair user to be elected as an MSP.
Once the new MSPs have been inducted, they will need to take the oath or make a solemn affirmation, pledging allegiance to the Queen.
Nicola Sturgeon will be the first to do so at 9am on Thursday.