Mary Elaine Sykes (1896-1981) was a British solicitor.
In 1922 she and Mary Pickup, Carrie Morrison, and Maud Crofts became the first women in England to qualify as solicitors; Morrison was the first of them to finish her articles, and was the first woman admitted to the role of solicitor. Sykes was admitted as such in 1923. She worked for her father’s firm until 1930, when she set up her own firm, Mary Sykes & Co.
In 1935 she became the only woman on the Huddersfield Town Council; at that time she was also Huddersfield’s only practicing woman solicitor. In 1937 she became Huddersfield’s first woman alderman, and in 1945 she became the first woman to be elected as Lord Mayor of Huddersfield.
She married in 1953.
She was a member of the Labour Party and served as President of the Huddersfield Labour Party.
She was also a Soroptimist.