Elizabeth Murphy Topp is an American pharmaceutical scientist and educator known for her work in solid‐state chemical stability of proteins and peptides.

In 2000s Topp introduced solid-state hydrogen-deuterium exchange as the method for stability characterization of lyophilized biopharmaceutical formulations.

[2][3] She is the Chief Scientific Officer at National Institute of Bioprocessing Research and Training (NIBRT) in Dublin, Ireland since September 2019.

[5] She has been the Head and Dane O. Kildsig Chair at the Department of Industrial and Physical Chemistry at Purdue University College of Pharmacy from 2009 to 2017.

[7] In 2015 Topp co-founded, with Alina Alexeenko, an industry-university consortium LyoHUB for advancing pharmaceutical lyophilization technology.