Lori Anne Passmore FRS is a Canadian/British cryo electron microscopist and structural biologist who works at the Medical Research Council (MRC) Laboratory of Molecular Biology (LMB) at the University of Cambridge.

She worked with Venki Ramakrishnan and Richard Henderson, using cryo-EM to determine the structure of the eukaryotic ribosome bound to initiation factors.

Her group uses in vitro reconstitution, biochemical assays and cryo-EM to understand the function of multiprotein complexes that regulate gene expression at the level of mRNA.

[5][6][7] Her group has developed new sample grids for cryo-EM that reduce specimen movement during imaging.

[8] In collaboration with Ketan J. Patel, Passmore is also actively studying the molecular mechanisms underlying Fanconi anemia.