Taeduk Radio Astronomy Observatory

HLA is a time signal radio station in Daejeon, South Korea, operated by the Korea Research Institute of Standards and Science. Established on November 24, 1984, it transmits a 2 kW signal on 5 MHz (±0.01 Hz). Originally only transmitted for 7 hours per day (01:00–08:00), 5 days per week (M–F), it is continuous as of 2011. There are over 100 users of the signal in Korea.It broadcasts a time signal similar to that of the WWV and WWVH stations with which it shares a frequency: Second pulses are 5 ms (9 cycles) of 1800 Hz, beginning on the second Seconds 29 and 59 are omitted Minute markers are 800 ms of the same frequency Hour markers are 800 ms of 1500 Hz DUT1 is encoded using doubled pulses Voice time announcements are made after second 52 A time code is transmitted on a 100 Hz subcarrier

The National Science Museum is a national science museum in Daejeon, South Korea. It first opened in Seoul in 1926 and became a national museum in 1949. It moved to its current location in 1990 which is across the street from Expo Park which housed the Daejeon Expo in 1993. It received 1,795,076 visitors in 2017.

Taejon Expo '93 was a three-month international exposition held between Saturday, August 7, 1993 and Sunday, November 7, 1993 in the central South Korean city of Daejeon (at the time spelled "Taejŏn").

Expo Science Park (Korean: 엑스포과학공원) is a science park in Yuseong District, Daejeon, South Korea, built for Taejŏn Expo '93. Facilities at Expo Park included a garden, amusement park, and observation tower. While the tower and some buildings remain, most of the expo buildings have now been removed. The Daejeon Convention Center became the first convention center in the city in 2008 and opened their second building in 2022. In September 2014, the Ministry of Science, ICT and Future Planning announced that Expo Science Park would be demolished in stages from November 2014 to August 2015. However, in recognition of their historic value, Hanbit Tower, the international conference room, and the simulation pavilion would be kept. In November 2014, the Shinsegae consortium won a bid to build the science complex within the park.In September 2017, Studio Cube, a state-run film studio complex on the site of the park, formally opened its doors to film and drama production.As of 2018, the site is hosting the headquarters complex for the Institute for Basic Science.In August 2021, the 2nd Expo Bridge, connecting the park with Seo-gu, opened.

The Institute for Basic Science (IBS; Korean: 기초과학연구원) is a Korean government-funded research institute that conducts basic science research and relevant pure basic research. IBS was established in November 2011 by the Lee Myung-bak administration as a research institute, later be a core of the International Science and Business Belt (ISBB) upon relocation of their headquarters from a rented property to their own campus in January 2018 using land reclaimed from the Taejŏn Expo '93 in Expo Science Park. Comprising 30 research centers with 68 research groups across the nation and a headquarters in Daejeon, IBS has approximately 1,800 researchers and doctoral course students. Around 30% of the researchers are from countries outside of South Korea. The organization is under the Ministry of Science and ICT. In 2011, the Korean government announced an investment of more than 2 trillion KRW (roughly US$2 billion) to build a heavy ion accelerator facility, named RAON, in northern Daejeon by 2021 before getting pushed back to 2025. The facility is expected to be the world's first device using both the isotope separator on-line (ISOL) and in-flight (IF) methods.From December 2018, the IBS Center for Climate Physics, headed by Axel Timmermann, began to utilize a 1.43-petaflop Cray XC50 supercomputer, named Aleph, for climate physics research. In that same year it was noted that the largest share of Clarivate Highly Cited Researchers in Korea are affiliated with IBS.

Daejeon Science High School for the Gifted (DSHS, Korean: 대전과학고등학교) is located in Daejeon, South Korea. It was founded in 1984. The school is for gifted students with talents in mathematics and sciences. The graduates of the school usually go to science or engineering schools in Seoul National University, KAIST and other prestigious universities in Korea and in the world, and also medical schools in Korea.

Information and Communications University (ICU), established in 1998, was a Korean university focused primarily on research and engineering in the field of information technology. It was located in the city of Daejeon and comprised an engineering school and a management school. As of 2006, about 20% of the enrolled graduate students were international students. Unlike other Korean universities, almost all courses were taught in English.On March 1, 2009, the university merged into KAIST as a separate department, under the name of the Information Technology Convergence Campus. After this controversial merger a consortium of Professors and Directors of Research Centres (at ICU) in South Korea founded The Information and Communications University (ICU) to perpetuate the legacy and continuity of the Information and Communications University through international training and distance education, with its subsidiary in Zambia (ICU Zambia).

Armed Forces Nursing Academy is a college located in Yuseong-gu, Daejeon, South Korea.

The National Institute for Mathematical Sciences (NIMS; Korean: 국가수리과학연구소) is a Korean government-funded mathematics research institute. Their work focuses both basic research and applied mathematics with industrial and medical applications. Founded in 2005, NIMS became an affiliated research institute of the Institute for Basic Science in 2012. After delays for multiple years, relocation is planned for late 2023. The vision of NIMS is to "attain a global top 10 competitiveness in industrial mathematics research by 2028".

Korea Research Institute of Bioscience and Biotechnology (KRIBB) is a government research institute in Daejeon, South Korea. It is dedicated to biotechnology research across a broad span of expertise, from basic studies for the fundamental understanding of life phenomena to applied studies such as drug discovery, novel biomaterials, integrated biotechnology and bioinformation. KRIBB was established in 1985. Its accomplishments include the advancement of welfare and medical technology, an increase in food production, a cleaner environment and new bio-materials and energy sources. It has identified reasons for the failure of animal cloning, conducted a comparative study of chimpanzee genes and successfully analyzed the structure of the reactive oxygen species switch protein, which became the first study by Korean scholars to be published in Cell, an international scientific journal. The institute was ranked first in the discovery of new microorganisms, including the indigenous microorganisms of the Dokdo Islets, for four consecutive years. Its recent accomplishments include the development of a genome capable of controlling cancer cell proliferation and the identification of a neuropeptide Y-based growth control mechanism, with possibilities for new treatments for cancer, diabetes, obesity and ageing. Nano–bio sensor research led to the development of the world's smallest surface plasmon resonance biochip.

The High-Flux Advanced Neutron Application Reactor (HANARO) (하나로) is a 30 MW multi-purpose research reactor located at Daejeon, Republic of Korea. It was designed by Korea Atomic Energy Research Institute (KAERI) as a facility for research and development on the neutron science and its applications. HANARO has been playing a significant role as a national facility in the area of neutron science, the production of key radioisotopes, material testing for power reactor application, neutron transmutation doping (NTD), neutron activation analysis, and neutron radiography. After the installation of a cold neutron source in 2010, it has been also serving as a regional and international facility for neutron science.

Daedeok Innopolis, formerly known as Daedeok Science Town, is the research and development district in the Yuseong-gu district in Daejeon, South Korea. The plan to concentrate research institutes and universities was made in 1967 and president Park Chunghee approved subsequent master planning in 1973. Now the district contains over 20 major research institutes and over 40 corporate research centers. There are 232 research and educational institutions to be found in Daejeon, many in the Daedeok region, among them the Electronics and Telecommunications Research Institute and the Korea Aerospace Research Institute. A number of IT venture companies have sprung up in this region due to the high concentration of Ph.Ds in the applied sciences. Korea has invested heavily in building up the research expertise for over 30 years, creating long-term research programs. Over 7,000 PhD researchers are in the sciences in Daedeok and it had the most application for patents during 2000–2011 among the National Industrial Complex. The "town" will provide a core for the International Science and Business Belt. The Daedeok Innopolis logo was created by the industrial design company INNO Design in Palo Alto, USA.