| Location of Exhibition | Painting Exhibited | Possible dates |
| Agnew and Sons Gallery | 27 (Listed) | 1919 |
| Royal Society of Artists (Birmingham) | 2 | |
| Colnaghi and Co Gallery | 1 | |
| Chenhil Galleries | 1 | |
| Grosvenor Gallery | 1 | |
| Glasgow Institute of Fine Arts | 5 | |
| International Society | 14 | 1913 & 1914 |
| Walker Art Gallery (Liverpool) | 29 | 1911 |
| London Salon | 3 | |
| Royal Society of Portrait Painters | 101 | |
| Royal Academy | 59 | 1913 |
| Royal Hibernian Academy | 5 | |
| Royal Institute of Oil Painters | 11 | |
| Royal Scottish Academy | 15 | 1911 |
| Venice Exhibition | at least 1 | 1912 |
By way of his greatest public exhibition took place in 1951, only one year prior to his death, when he presented 96 paintings at the Royal Institute Galleries in Piccadilly. The list reads like a who's who of the rich and famous and stands as a testimonial to his work. I have just acquired (10/1/2000) the entire list of this exhibition and will post it on this site as soon as possible.
In addition to the above we are aware of a number of other exhibitions of his work, including the many times Charleston was open to the public both on a casual and formal basis. There were also a number of exhibitions held abroad which are recorded in passing in various documents but they do not list the location nor the number of items exhibited.
It must also be remembered that many of his paintings now hang either in Galleries and Museums or in the Stately Homes of The United Kingdom (and elsewhere) which are open to the public so that the work of Sir Oswald Birley will be in public exhibition for many years to come.