Very Rev Dr Robert Walter Stewart DD (1812–1887) was a 19th century Scottish minister of the Free Church of Scotland and who spent much time working in Italy and served as Moderator of the General Assembly 1874/75.
He helped to promote the Waldensian Church and the Presbyterian movement in northern Italy.
He was also a travel writer and early photographer.
Being independently wealthy he frequently detached himself from his religious duties for extended holidays.
However, he was a noted philanthropist and put both time and money into the promotion of the Presbyterian Church in Italy.