A "group exposition" or "collective exhibition" could be used to describe a two person art show ... BUT (after searching the internuts a bit) it seems that "Duo Exhibition" is the most common term for a two artist show. Group Exposition or Collective Exhibition applies to shows which have three artists or more.
examples:
- In the exhibition guidelines for the MacDonald Island Community Art Gallery Exhibition they list three categories of exhibitions which depends on the number of artists showing: Solo, Duo and Collective
http://www.macdonaldisland.ca/userfiles/files/2015%20Exhibition%20Guidelines.pdf
- Article at SEÇİL BÜYÜKKAN gallery discussing the Seçil Büyükkan and Deniz Aktaş "Hande Şarman" show refers to the event as a "Duo Exhbibition".
http://www.secilbuyukkan.com/texts.asp?id=7Examples:
- The CV for visual artist Yooree Yang gives a listing of Solo Exhibition & "Duo Exhibitions" the artist has participated in the past
http://www.yooreeyang.com/wordpress/wp-content/uploads/2016/06/yooreeyang_portfolio-2016.pdf
In the exhibition guidelines for the MacDonald Island Community Art Gallery Exhibition they list three categories of exhibitions which depends on the number of artists showing: Solo, Duo and Collective
SEÇİL BÜYÜKKAN gallery discussing the Seçil Büyükkan and Deniz Aktaş "Hande Şarman" show refers to the event as a "Duo Exhbibition".
The CV for visual artist Yooree Yang gives a listing of Solo Exhibition & "Duo Exhibitions" the artist has participated in the past
