Mariah Elizabeth Sadler (née: Gardiner) was a British woman who lived in the sixteenth century. She married to William Sadler when she was nineteen and got three children with him, the youngest of whom was Charles Sadler, later one of the first hvetshranologists. In her pastime, Mariah made hats and had them brought to Oxford for her older cousin's business, which earnt the family a little extra.