Countess of Devon

{{Infobox political post

|post = Countess

|body = Devon

|image = 100px
130px

|incumbent = Allison Joy Courtenay

|incumbentsince = {{start date|df=y|2015|08|18}}

|termlength = As long as married to the Earl of Devon

| first = Adelize de Baalun

| formation = 1141 (first creation)
1553 (fifth and present creation)

| member_of = Peerage of England

| style = The Right Honourable

| seat = Powderham Castle

}}

Countess of Devon is a title that may be held by a woman in her own right or used by the wife of the Earl of Devon. Women who have held the title include:

Countesses in their own right

Isabel de Forz, suo jure 8th Countess of Devon (1237–1293)

Countesses by marriage

Adelize de Baalun (d. {{Circa|1146}})
Amice de Clare (c. 1220–1284)
Margaret de Bohun (1311–1391)
Margaret Beaufort (c. 1409–1449)
Catherine of York (1479–1527)
Allison Joy Langer (born 1974)

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