Katharine Sarah Macquoid (née, Thomas; 26 January 1824 - June 1917) was a British novelist and travel writer, who published over 65 works.

She began with verse and stories for children, in The Welcome Guest, a weekly paper edited by John Maxwell, for which her husband acted as illustrator.

Macquoid also made her mark as the writer of travel books, such as Through Normandy, Through Brittany, In the Ardennes, Pictures in Umbria, and In the Volcanic Eifel, which were illustrated by her husband.

Her work was appreciated by parents as her stories were not only interesting, but could be read with avidity by young girls for they were not "silly" or of the "milk-and-water" variety.

[1] The second son, Gilbert Macquoid, was a solicitor, who edited Jacobite Songs and Ballads, and who assisted his mother in some of her travel books.