Euphemia Eleanor Baker (aka Effie Baker) (1880–1968) was an Australian photographer, and follower and advocate of Bahá'í Faith.
Initially she took pictures of Australian wildflowers and published them in a booklet form.
Later, after becoming a follower of Bahá'í Faith in 1922, she took pictures of the Bahá'í monuments in Australia, New Zealand, Iraq and Persia, some of which were included in Shoghi Effendi's translation of the book The Dawn-Breakers.
She became one of the Bahá'í Faith's notable photographers.