| Honorific Prefix: | The Right Reverend |
| Vicar Apostolic of Scotland | |
| Church: | Roman Catholic Church |
| Appointed: | 7 September 1694 |
| Ended: | 12 October 1718 |
| Predecessor: | office established |
| Successor: | James Gordon |
| Other Post: | Titular Bishop of Peristasis |
| Ordination: | 9 March 1686 |
| Consecration: | 27 February 1695 |
| Consecrated By: | Jules Mascaron |
| Birth Date: | 1645 |
| Birth Place: | Birkenbog, Banffshire, Scotland |
| Death Date: | 12 October 1718 (aged 73) |
| Death Place: | Preshome, Scotland |
Thomas Joseph Nicolson (1645–1718) was a Roman Catholic bishop who served as the Vicar Apostolic of Scotland.
He was born the son of Thomas Nicolsone, merchant, and his wife, Elizabeth Abercrombie of Birkenbog. His older brother was Sir George Nicolson, Lord Kemnay.[1]
Born in Birkenbog, Banffshire in 1645, he was converted to the Roman Catholic Church in 1682. He was ordained a priest on 9 March 1686. He was appointed the Vicar Apostolic of Scotland and Titular Bishop of Peristasis by the Holy See on 7 September 1694. He was consecrated to the Episcopate in Paris on 27 February 1695. The principal consecrator was Bishop Jules Mascaron of Agen, and the principal co-consecrators were Bishop Henri de Barillon of Luçon and Bishop Martin de Ratabon of Ypres. He died in office on 12 October 1718, aged 73.[2]
. William Maziere Brady. The Episcopal Succession in England, Scotland and Ireland, A.D. 1400 to 1875 . 1876 . Tipografia Della Pace . Rome . 3 . 456–457.