William B. Parnell (d. Croydon, 1886) was an architect active in the 19th century particularly in Newcastle upon Tyne, England.
[2] Noted architect Frank West Rich served as an apprentice under Parnell.
[3] Parnell trained under Edward I'Anson in London before relocating to Newcastle upon Tyne.
[5] Parnell's Tyne Theatre and Opera House operates to this day.
Parnell architected Phoenix House that was built for Royal Insurance.