The Celtics also have various alternative logos, with the most popular being a white shamrock with the letters "Celtics" above it, wrapped in a green circle, which has been used since the 1998–99 season.
Os Celtics tamén teñen diferentes logotipos alternativos, o máis popular é un trevo branco coas letras "Celtics" por encima del, envolto nun círculo verde, que se utilizou dende a tempada 1998-99.