Carl Gustaf Anders Franzén (23 July 1918 – 8 December 1993) was a Swedish marine technician and an amateur naval archaeologist.

He also participated in the exploration for the wrecks of Swedish warships Kronan, Riksäpplet and Resande Man as well as Gustav Vasa's flagship Lybska Svan.

[2] Franzén studied naval architecture at the Royal Institute of Technology (KTH), but instead developed a strong interest for history and never graduated.

At the same time, Franzén was conducting amateur historical research in archives, where he was searching for information on old shipwrecks of the Swedish Navy.

Early on, he had realised that in the brackish water conditions in Baltic Sea, wrecks of old wooden ships could survive without being attacked by shipworm.