CoCoA is a computer algebra system, which specializes in handling ideals and modules over rings of multivariate polynomials. The techniques used are mainly based on the theory of Gröbner bases. Continuing the series of COCOA schools and workshops which have been organized since 1999 in Torino, Italy, the International Workshop on Computer Algebra: COCOA 2020 will take place in March 9-15, 2020 at Hue University of Education, Hue city, Vietnam. The aim of this workshop is to offer researchers an exposition to contemporary research topics in Computer Algebra and Computational Commutative Algebra and to give an opportunity for young researchers to learn recent developments in these research areas and to discuss their topics with other researchers and well-known professors.