Ottawa Technical Secondary School

{{distinguish|Ottawa Technical High School}}

{{Notability|1=Geographic|date=April 2024}}

{{unreferenced|date=June 2018}}

{{Infobox school

| name = Ottawa Technical Secondary School (OTSS)

| image = Ottawa Technical Learning Centre.JPG

| image_size = 300px

| caption =

| address = 485 Donald Street

| city = Ottawa

| province = Ontario

| postcode = K1K 1L8

| country = Canada

| coordinates = {{coord|45.4296|N|75.6464|W|region:CA-ON|display=inline,title}}

| founded = 1973

| schoolboard = Ottawa Carleton District School Board

| school_number =

| administrator = Mrs. Claudia Cesario

| principal =

Jason Rama

| grades_label = Grades

| grades = 9-12

| enrollment = 350 (2019-2020)

| campus = Suburban

| colours = {{Color box|Orange|border=darkgray}}{{Color box|Blue|border=darkgray}} Orange Blue

| team_name = Mustangs

| free_label = Public transit access

| free_text = OC Transpo (Routes 7,14,18, and 19)

| homepage = {{URL|http://www.otss.ocdsb.ca}}

}}

The Ottawa Technical Secondary School (name changed as of May 1, 2010) is an Ottawa-Carleton District School Board high school in Ottawa, Ontario, Canada. It specializes in technology, trades, design and engineering education. It is located on Donald Street, Ottawa, Ontario, Canada (Rideau/Rockcliffe ward 13) and as of 2023 serves students from the entire east side of the Rideau River.

Until 2001, it was known as McArthur High School. From 2001 to 2010 it was known as Ottawa Technical Learning Centre.

The school opened in 1973 and was one of several vocational schools operated by the Ottawa Board of Education. In 2010, the name was changed to Ottawa Technical Secondary School.