Gr@v members C. Herdeiro, H. Olivares, and J. Novo delivered talks in the workshop "Lensing and Wave Optics in Strong Gravity", held at the Erwin Schrödinger International Institute for Mathematics and Physics (ESI) in Vienna, Austria, from December 9-14th. The workshop also featured contributions from Gr@v members I. Sengo and P. Cunha, with P. Cunha additionally serving as a co-organizer.