The 7th edition of the International Conference on “Advancements in Nuclear Instrumentation Measurement Methods and their Applications” (ANIMMA) was held in Prague, Czech Republic, on June 21–25, 2021, in hybrid mode. The ANIMMA-2021 welcomed 320 attendees from 29 nationalities including 65 graduated students coming from academy, research institutes, and industry to discuss new scientific and technical prospects in all fields where nuclear instrumentation and measurements techniques play a major role. 30% of the attendees participated physically and 70% attended remotely.