Sir Edmund Charles Workman-Macnaghten, 2nd Baronet (1 April 1790 – 6 January 1876) was an Irish baronet and Conservative Party politician.
He was a Member of Parliament (MP) for Antrim from 1847 to 1852.He was the son of Sir Francis Workman-Macnaghten, 1st Baronet, and his wife Laetitia Dunkin, daughter of Sir William Dunkin.
He was born in Dublin, and educated at Charterhouse School and Trinity College, Dublin.