Australia has several active particle physics groups (University of Adelaide, University of Melbourne, Monash University, University of Queensland, University of New South Wales and University of Sydney).

Members of these groups contribute to several experiments such as ATLAS, Belle/Belle II, COMET, Ice Cube, LHCb along with various direct dark matter searches, and are working towards the realisation of future facilities (CEPC, EIC, FCC, ILC). There is also a vibrant theory community with members throughout the country providing input to their experimental colleagues and working on theoretical understandings and expansions of the Standard Model.

The Belle II experiment is a particle physics experiment designed to study the properties of B mesons (heavy particles containing a beauty quark) and other particles. The Belle II spectrometer, located on the interaction point of the SuperKEKB electron-positron collider, Tsukuba, Japan, started data taking in early 2018. The Belle II collaboration consists of over 984 physicists and engineers from 115 institutions in 26 countries. 

The Italian research agency dedicated to the study of the fundamental constituents of matter and the laws that govern them, under the supervision of the Ministry of Education, Universities and Research (MIUR), is the Italian National Institute for Nuclear Physics (INFN). It conducts theoretical and experimental research in the fields of subnuclear, nuclear and astroparticle physics. Groups from the Universities of Rome, Padua, Turin, and Milan founded the INFN on 8thAugust 1951 to uphold and develop the scientific tradition established during the 1930s by Enrico Fermi and his school, with their theoretical and experimental research in nuclear physics. In the latter half of the 1950s, INFN designed and built the first Italian accelerator, the electron synchrotron developed in Frascati, where its first national laboratory was set up. During the same period, INFN began to participate in research into the construction and use of ever-more powerful accelerators being conducted by CERN, in Geneva. Today INFN employs some  6000 scientists whose work is recognized internationally not only for their contribution to various European laboratories, but also to numerous research centres worldwide. All of INFN’s research activities are undertaken within a framework of international competition, in close collaboration with Italian universities on the basis of solid academic partnerships spanning decades.

As an Institution working on cutting-edge scientific issues, INFN has a significant impact on the progress of knowledge, on technological development and on the economy of the country. Aware of this role, and of the fact that it is the duty of a public body to share its activities and the results that derive from them with society, the Institute is increasingly committed to outreach and public engagement. The Institute plays an important role in the communication of physics at the national and local level, by promoting, designing and implementing initiatives for the dissemination and promotion of scientific culture, both for the general public and for specific targets. In addition to traditional initiatives, it studies and experiments new forms of communication, emphasizing the fundamental relationship between physics and other areas of knowledge. The Institute also contributes a lot to the training of high school students through scholarships, internships, teacher training and school-work projects.

Particle physics in Belgium takes place at the universities of Antwerp, Brussels (both Dutch- and French-language universities), Gent, Leuven, Louvain-la-Neuve and Mons, with activities in many experiments. The largest groups are in the CMS-experiment at the LHC and in IceCube, but there is also participation in NA62, JUNO and SoLid. The outreach activities are many and diverse, ranging from Masterclasses to regular lectures for general public. Recently a major effort began to establish Gravitational Waves as a research line in almost every university, with participation in Virgo and the Einstein Telescope Pathfinder projects.

Germany has a very large community in basic research on particle physics, nuclear physics and astrophysics, with more than 2000 people attending the regular common national conferences. The diversity of the physics program in these fields is also reflected in the scales of the involved experiments and collaborations ranging from table top nuclear decay experiments to large scale accelerator facilities, such as CERN/LHC and GSI/FAIR. The research in Germany rests on three pillars of activity in Universities, Max-Planck-Institutes and the Helmholtz Centres. 

It is a key mission to explain the aspects of these fundamental research efforts to the general public and motivate young people with various background to contribute to the answers on the basic question of the origin of matter and the universe, and to advance technology and applications in related areas, such as medicine and the energy sector.

In Germany, a nation wide network (Netzwerk Teilchenwelt) since 2010 connects a growing number of research institutes and facilities to promote particle, astroparticle and nuclear physics.
Within the framework of Netzwerk Teilchenwelt, scientists are bringing particle physics into the classroom. Young researchers, mostly PhD students from the participating universities and research institutes, hold events for high school students, such as Masterclasses with data from various experiments or hands-on detector experiments.

Each year, around 3500 pupils take part in the multi-stage program, including 70 high school students being invited to CERN for workshops or to pursue their own research projects. Promising young academics continue to receive support during their studies and stay in close connection with the research groups via a Fellow program

QuarkNet and Fermilab are the leading institutions for United States particle physics outreach.

Both institutions had an exciting 2020, transitioning quickly to virtual offerings and expanding particle physics education and outreach to new audiences.

In addition to offering remote workshops at centers across the US, QuarkNet offered a

Wednesday Webinar series for high school classrooms toward the end of the 2019–20 school year and a six-week Summer Session for teachers which introduced participants to the history and development of the Standard Model. For the 2020–21 academic year, we have inaugurated QuarkNet Educational Discussions, which are an opportunity for teachers to come together every two weeks to share ideas and learn from one another about teaching physics remotely. Many of Fermilab’s biggest programs went virtual in 2020 and attracted expanded audiences, including the annual STEM Career Expo, teacher training workshops, Saturday Morning Physics, Fermilab Arts and Lecture Series, classroom visits from Fermilab staff, Ask-a-Scientist, and even Mr. Freeze. Although nothing can ever replace the feeling of seeing big science up close, these virtual offerings are filling a gap until we can return to welcoming the public to in-person events.

Each summer the EPE Office offers a number of different workshops for K–12 teachers, each geared toward specific grade levels. On short notice, Fermilab sent kits across the country to teachers interested in participating, thus ensuring that the hands-on piece of the program was not lost. Now, Fermilab science will be taught in the virtual and in-person classrooms of 109 more teachers across the United States.

Saturday Morning Physics is a long-standing tradition at Fermilab. In September 2020 the program was relaunched as fully virtual for the present time. Featuring talks by Fermilab staff, virtual tours and plenty of time for questions, this program had its largest graduating class ever. For the public Fermilab was able to relaunch Ask-a-Scientist and our Summer Science Series as virtual programs. The events have been well-attended:  500 people have participated in the two series.

The Swiss Institute for Particle Physics (CHIPP) is an association according to Swiss law regrouping all the particle, astroparticle, and nuclear physicists holding a Master in physics and working for a Swiss institution, as well as the Swiss PhD nationals working at CERN.
Founded in 2003, CHIPP aims at strengthening in Switzerland three main pillars: Particle physics at the high-energy and intensity frontiers
astroparticle physics and neutrino physics.
This is achieved by promote public awareness on particle and astroparticle physics, helping towards a successful participation of Swiss groups in international projects and ensuring a proper Swiss representation in relevant national and international bodies.

Research in high energy physics is carried out mainly at four institutes in Bratislava and Košice, and focuses on the ATLAS and ALICE experiments at the LHC. Research groups from Bratislava, active in nuclear structure studies, perform their experiments at ISOLDE facility at CERN. Smaller groups or individuals participate in other collaborations at CERN (NA49, NA57, NA62), and in experiments at other accelerator laboratories. Recent outreach events include International Particle Physics Masterclasses for high schools, a competition of videos about particles „Cascade“ projects, Physics tent at Pohoda, the largest music festival in Slovakia and a virtual visit of ATLAS experiment.