Herbert Arthur Sinnott (born January 7, 1871 — died 19??) was a teacher, lawyer and the 18th mayor of Calgary, Alberta.

Sinnott was born in Kings County, New Brunswick

Kings County, New Brunswick

Kings County is located in southern New Brunswick, Canada.Both the Saint John and Kennebecasis rivers pass through the county.Dairy farming is an important industry in the area...

 on January 7, 1871. He graduated from Mount Allison University

Mount Allison University

Mount Allison University is a primarily undergraduate Canadian liberal arts and science university situated in Sackville, New Brunswick. It is located about a half hour from the regional city of Moncton and 20 minutes from the Greater Moncton International Airport...

 with a Bachelor of Arts

Bachelor of Arts

A Bachelor of Arts , from the Latin artium baccalaureus, is a bachelor's degree awarded for an undergraduate course or program in either the liberal arts, the sciences, or both...

 and started teaching in Gagetown

Gagetown, New Brunswick

Gagetown is a Canadian village in Queens County, New Brunswick. It is situated on the west bank of the Saint John River and is the county's shire town.-Acadians:...

 and Moncton, New Brunswick

Moncton, New Brunswick

Moncton is a Canadian city, located in Westmorland County, New Brunswick. The city is situated in southeastern New Brunswick, within the Petitcodiac River Valley, and lies at the geographic centre of the Maritime Provinces...

. In 1903, he became a school principal in Calgary. He began a career in law in 1908, articling under Thomas M. Tweedie. In 1911, he was called to the bar

Bar association

A bar association is a professional body of lawyers. Some bar associations are responsible for the regulation of the legal profession in their jurisdiction; others are professional organizations dedicated to serving their members; in many cases, they are both...

.

Sinnott was elected as Mayor of Calgary and served in this position from January 2, 1913 to January 2, 1915. His date of death is unknown.