Seems like the answer is No. You'll need .Net 4.
If you'd like to read more, have a look at this discussion on the oxyplot forum.
Pregunta
Is there any release of OxyPlot for .NET 3.5?
I couldn't find it in http://oxyplot.codeplex.com/, but maybe there is an old version...
Solución
Seems like the answer is No. You'll need .Net 4.
If you'd like to read more, have a look at this discussion on the oxyplot forum.
Otros consejos
Actually, it is. You can build OxyPlot for .NET 3.5 yourself from sources. Here is the description how to do this. Briefly, you can download source code from Git and open OxyPlot.WPF_NET35.sln file with Visual Studio (2010+). Just minor code modification is needed (2 loc).