The following individuals were employed or trained by this architectural practice (click on an item to view details):
Employees or Pupils2
| Name | Position | Date From | Date To | Notes |
| Robert Claud Kerr | Apprentice | In year 1884 | c. 1889 | Perhaps stayed on as assistant |
| Henry Mitchell | Draughtsman | Early 1888s | In year 1894 | |
| James Herbert MacNair | Apprentice | Early 1888s | In year 1894 | |
| Charles Edward Whitelaw | Apprentice | Early 1888s | c. 1892 | |
| David Forbes Smith | Assistant | Early 1888s | In year 1889 | |
| John Keppie | Partner | Early 1888s | 1901/01/01 | |
| John Honeyman | Partner | Early 1888s | 1901/01/01 | |
| Charles Rennie Mackintosh | Draughtsman | Early 1888s | Before 1896 | |
| George McKenzie | Assistant | c. 1888 | | |
| Robert Claud Kerr | Assistant | c. 1889 | Before 1898 | Uncertain whether he remained as assistant |
| Donald McKay Stoddart | Apprentice | In year 1892 | In year 1897 | |
| George Andrew Paterson | Apprentice | In year 1892 | In year 1898 | |
| Alexander McRae | Assistant | In year 1894 | In year 1896 | |
| James Black Fulton | Assistant | In year 1895 | In year 1897 | |
| Charles Rennie Mackintosh | Senior Assistant | Before 1896 | 1901/01/01 | |