flag of Trinidad and Tobago

{{short description|none}}

{{Use British English|date=October 2016}}

{{Infobox flag

| Name = Republic of Trinidad and Tobago

| Image = Flag of Trinidad and Tobago.svg

| Nickname = {{nowrap|Flag of the Republic of Trinidad and Tobago}}
{{nowrap|The Sun-Sea-Sand Banner}}

| Use = 111000

| Symbol = {{FIAV|111000}} {{FIAV|normal}}

| Proportion = 3:5

| Adoption = {{start date and age|1962|8|31|df=yes}}

| Design = A red field with a white-fimbriated black diagonal band from the upper hoist-side to the lower fly-side.

| Designer = Carlisle Chang

| Image2 = Civil Ensign of Trinidad and Tobago.svg

| Nickname2 = {{nowrap|Civil ensign of the Republic of Trinidad and Tobago}}

| Use2 = 000110

| Symbol2 = {{FIAV|000110}} {{FIAV|normal}}

| Proportion2 = 1:2

| Design2 = A red field with a white-edged black diagonal band from the upper hoist-side to the lower fly-side.

| Image3 = Naval Ensign of Trinidad and Tobago.svg

| Nickname3 = {{nowrap|Naval ensign of the Republic of Trinidad and Tobago}}

| Use3 = 000001

| Symbol3 = {{FIAV|000001}} {{FIAV|normal}}

| Proportion3 = 1:2

| Design3 = A White Ensign with the National Flag in the canton

}}

The flag of Trinidad and Tobago was adopted upon independence from the United Kingdom on 31 August 1962. Designed by Carlisle Chang (1921–2001),[http://artsandculture.gov.tt/index.php/cultural/140-carlisle-chang "Carlisle Chang"] {{webarchive|url=https://web.archive.org/web/20160911193629/http://artsandculture.gov.tt/index.php/cultural/140-carlisle-chang |date=2016-09-11 }}, Ministry of Community Development, Culture and the Arts, Government of the Republic of Trinidad and Tobago.[https://www.youtube.com/watch?v=p3lnnKzq5eg "National flag of Trinidad and Tobago - Carlisle Chang"], YouTube.[http://www.nalis.gov.tt/Research/SubjectGuide/Biographies/BiographiesAC/tabid/100/Default.aspx?PageContentID=1093 Carlisle Chang biography] {{webarchive|url=https://web.archive.org/web/20150711123918/http://www.nalis.gov.tt/Research/SubjectGuide/Biographies/BiographiesAC/tabid/100/Default.aspx?PageContentID=1093 |date=2015-07-11 }}, NALIS. the flag of Trinidad and Tobago was chosen by the independence committee of 1962. Red, black and white symbolise fire (the sun, representing courage), earth (representing dedication) and water (representing purity and equality).[http://www.ttconnect.gov.tt/gortt/portal/ttconnect/!ut/p/a1/04_Sj9CPykssy0xPLMnMz0vMAfGjzOK9A40MTD0tjQ38Aw0sDYyCPA1dDUy9jd2DDIEKIlEUBLm7ARW4mhp6eIcZGxgYEKffAAdwJKg_ODVPP1w_Cq8yLwMMBZjOBCvA446C3NCICs9MRwCWELx4/dl5/d5/L2dBISEvZ0FBIS9nQSEh/?WCM_GLOBAL_CONTEXT=/gortt/wcm/connect/GorTT+Web+Content/TTConnect/Home/About+T+and+T/National+Emblems/National+Flag National Flag] {{Webarchive|url=https://web.archive.org/web/20211022011805/http://www.ttconnect.gov.tt/gortt/portal/ttconnect/!ut/p/a1/04_Sj9CPykssy0xPLMnMz0vMAfGjzOK9A40MTD0tjQ38Aw0sDYyCPA1dDUy9jd2DDIEKIlEUBLm7ARW4mhp6eIcZGxgYEKffAAdwJKg_ODVPP1w_Cq8yLwMMBZjOBCvA446C3NCICs9MRwCWELx4/dl5/d5/L2dBISEvZ0FBIS9nQSEh/?WCM_GLOBAL_CONTEXT=%2Fgortt%2Fwcm%2Fconnect%2FGorTT+Web+Content%2FTTConnect%2FHome%2FAbout+T+and+T%2FNational+Emblems%2FNational+Flag |date=2021-10-22 }}". Government of the Republic of Trinidad and Tobago. Retrieved May 12, 2017.

It is one of the few national flags incorporating a diagonal line (heraldic bend), with other examples including the DR Congo, Tanzania, Namibia, and Brunei. It is one of two national flags with two-fold rotational symmetry, symmetry group C₂, the other being the Union Jack.