RaySearch Laboratories (AB publ) is a Swedish medical technology company that develops software used in radiation therapy of cancer.

Its products are also distributed through licensing agreements with medical technology companies including Accuray, Mevion, Philips, Nucletron, IBA, Varian, and Brainlab.

[3] Founder and CEO Johan Löf started the company based on knowledge acquired during his PhD work on radiation treatment of moving tumors at Karolinska Institutet in Stockholm, Sweden.

[7] Between 2004 and 2007, RaySearch entered into partnership agreements with Nucletron,[8] IBA Dosimetry,[9] TomoTherapy,[10] and Varian Medical Systems.

[14] The RayStation system was launched in 2009, and West German Proton Therapy Center Essen placed the first order in the same year.