EREP 2026, Spanish & Portuguese Relativity Meeting, May 25-29 in Murcia The Spanish-Portuguese Relativity Meetings (EREPs) are a long-standing scientific tradition that began in 1977. Since then, they have served as a key forum for the Portuguese and Spanish communities working in General Relativity and Gravitation, promoting collaboration and the exchange of ideas across a broad range of topics. Organized annually by different research groups from both countries, EREPs have become the most prominent conference on gravitation and relativity in the Iberian Peninsula. Meeting Website

LISA Sprint in Bozeman, Montana May 11-13, 2026 Applications are now open for the LISA Sprint, to be held in Bozeman, Montana May 11-13. Please fill out the application form linked below ASAP. Successful applicants will be notified before the end of February to allow time to make travel arrangements. LISA Sprint Website

GWADW2026 – Gravitational-Wave Advanced Detector Workshop, May 17-23, 2026, La Biodola With more than 250 detected events, the LIGO-Virgo-KAGRA network has successfully concluded on November 18, 2025, the third part of the O4 observing run (O4c). An intense activity to analyze the collected data is ongoing, and in the meantime plans for upgrades toward O5 are prepared, to further increase the number of detected coalescences and with the aim of possibly detect new classes of gravitational wave emitters. Workshop Website

GW Workshop, June 29 – July 3, 2026 at Principia Institute, São Paulo, Brazil The second generation of Gravitational wave (GW) detectors has been operating until recently at unprecedented sensitivity, providing observations of binary system coalescences, whose sources are neutron stars and black holes with masses ranging from one to one hundred solar masses. Workshop Website

High-Energy Astrophysics: Sources and Detection – ISAPP School Paris-Saclay 2026, June 8-19, 2026 The ISAPP school on „High-Energy Astrophysics: Sources and Detection“ will be held at the Institut Pascal, within the Paris-Saclay University, France. The goal of the school is to offer a general overview on topics in high energy astrophysics related to cosmic rays, from observations to the modelling of high-energy particle sources. It will particularly focus on mult-messenger observations, at the dawn of the CTA era. The school is primarily aimed at PhD students working in this field, as well as young postdocs. School Website

PAFT26 – Quantum Frontiers in Gravity, March 29 – April 1 2026 in Vietri Sul Mare The main objective of the conference „PAFT26 – Quantum Frontiers in Gravity“ is to bring together theoretical physicists and phenomenologists who are experts in the complementary fields of classical and quantum gravity, modified gravity, and experimental aspects of gravity in quantum systems. The conference will give space to a constructive exchange of ideas and encourage new collaborations. Conference Website

IberiCos 2026, April 22-24 2026 at University of Granada The spirit of the meetings is to provide an open and inclusive forum for sharing ongoing research. Accordingly, IberiCOS 2026 will cover a wide range of topics, including primordial black holes, dark energy and dark matter, theoretical and observational cosmology, and gravitational waves. A key goal of the meeting is to foster dynamic interactions between theorists and observers. Conference Website

Black Holes & Cosmology, June 15-19 2026, Granada The purpose of the international conference series Black Holes & Cosmology is to bring together world-renowned experts as well as junior researchers working on theoretical and observational aspects of black holes, particularly (but not limited to) their role in cosmology. Conference Website

GW Open Data Workshop 2026, April 20-23 in Toulouse and online This course includes lectures, software tutorials, quiz questions, and a data challenge. Complete the course and data challenge to receive a certificate. Workshop Website

Binary compact objects on eccentric orbits and their gravitational-wave signatures, September 1-6 2026, Corfu The workshop will bring together experts in theory, numerical relativity, data analysis, and astrophysics, as well as early-career researchers entering these fields. We aim to create a collaborative environment where participants can share results, exchange ideas, and identify the next key steps. Workshop Website