Joan Muysken (born 18 December 1948, in Delft[1]) is a Dutch professor emeritus of Economics at the Maastricht University.

Muysken received his PhD in Economics from the University of Groningen on the aggregation of production functions.

[2] Muysken's research includes work on endogenous growth and diffusion of technologies; skill mismatch;[3] job competition;[4] analysis of unemployment; portfolio investment[5] and other topics, including his work on health as a determinant of economic growth.

[1][2][7] His most notable work, so far, is Full Employment Abandoned (2008), co-written with Australian economist Bill Mitchell.

The authors trace the theoretical analysis of the nature and causes of unemployment over the last 150 years and argue that the shift from involuntary to so-called "natural rate" concepts of unemployment are behind an "ideological backlash" against state intervention as notably advocated, within the frame of the free economy, by Keynes in the 1930s.