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Danh sách theo bảng chữ cái > K

Mikhail Kalashnikov (1919–2013), Russia – AK-47 and AK-74 assault rifles (the most produced ever)
Bob Kahn (born 1938), together with Vint Cerf (born 1943), USA – Internet Protocol (TCP/IP)
Dawon Kahng (1931–1992), South Korea, together with Simon Sze (born 1936), Taiwan/USA – Floating-gate MOSFET
Dean Kamen (born 1951), USA – Invented the Segway HT scooter and the IBOT Mobility Device
Heike Kamerlingh Onnes (1853–1926), Netherlands – liquid helium
Nikolay Kamov (1902–1973), Russia – armored battle autogyro, Ka-series coaxial rotor helicopters
Pyotr Kapitsa (1894–1984), Russia – first ultrastrong magnetic field creating techniques, basic low-temperature physics inventions
Georgi Karpechenko (1899–1941), Russia – rabbage (the first ever non-sterile hybrid obtained through the crossbreeding)
Jamshīd al-Kāshī (c. 1380–1429), Persia/Iran – plate of conjunctions, analog planetary computer
Yevgeny Kaspersky (born 1965), Russia – Kaspersky Anti-Virus, Kaspersky Internet Security, Kaspersky Mobile Security anti-virus products
Andrew Kay (1919–2014), USA – Digital voltmeter
Adolphe Kégresse (1879–1943), France/Russia – Kégresse track (first half-track and first off-road vehicle with continuous track), dual clutch transmission
Carl D. Keith (1920–2008), together with John J. Mooney (c. 1928–), USA – three way catalytic converter
Mstislav Keldysh (1911–1978), Latvia/Russia – co-developer of Sputnik 1 (the first artificial satellite) together with Korolyov and Tikhonravov
John Harvey Kellogg (1852–1943), cornflake breakfasts
John G. Kemeny (1926–1992), together with Thomas E. Kurtz (born 1928), Hungary/USA – BASIC (programming language)
Alexander Kemurdzhian (1921–2003), Russia – first space exploration rover (Lunokhod)
William Saville-Kent (1845–1908), UK/Australia – Pearl culture, see also Mikimoto Kōkichi
Kerim Kerimov (1917–2003), Azerbaijan and Russia – co-developer of human spaceflight, space dock, space station
Charles F. Kettering (1876–1958), USA – invented automobile self-starter ignition, Freon ethyl gasoline and more
Fazlur Khan (1929–1982), Bangladesh – structural systems for high-rise skyscrapers
Yulii Khariton (1904–1996), Russia – chief designer of the Soviet atomic bomb, co-developer of the Tsar Bomb
Anatoly Kharlampiev (1906–1979), Russia – Sambo (martial art)
Al-Khazini (fl.1115–1130), Persia/Iran – hydrostatic balance
Konstantin Khrenov (1894–1984), Russia – underwater welding
Abu-Mahmud al-Khujandi (c. 940–1000), Persia/Iran – astronomical sextant
Muhammad ibn Mūsā al-Khwārizmī (Algoritmi) (c. 780-850), Persia/Iran – modern algebra, mural instrument, horary quadrant, Sine quadrant, shadow square
Marcel Kiepach (1894-1915), Croatia – dynamo, maritime compass that indicates north regardless of the presence of iron or magnetic forces
Erhard Kietz (1909–1982), Germany & USA. – signal improvements for video transmissions
Jack Kilby (1923–2005), USA – patented the first integrated circuit
Al-Kindi (Alkindus) (801–873), Iraq/Yemen – ethanol, pure distilled alcohol, cryptanalysis, frequency analysis
Petrus Jacobus Kipp (1808–1864), The Netherlands – Kipp's apparatus (chemistry)
Steve Kirsch (born 1956), USA – Chuột quang
Fritz Klatte (1880–1934), Germany – vinyl chloride, forerunner to polyvinyl chloride
Yves Klein (1928–1962), France – International Klein Blue
Margaret E. Knight (1838–1914), USA – machine that completely constructs box-bottom brown paper bags
Tom Knight (? –), USA – BioBricks (synthetic biology)
Ivan Knunyants (1906–1990), Armenia/Russia – capron, Nylon 6, polyamide-6
Robert Koch (1843–1910), Germany – method for culturing bacteria on solid media
Willem Johan Kolff (1911–2009), Netherlands – artificial kidney hemodialysis machine
Rudolf Kompfner (1909–1977), USA – Traveling-wave tube
Konstantin Konstantinov (1817 or 1819–1871), Russia – device for measuring flight speed of projectiles, ballistic rocket pendulum, launch pad, rocket-making machine
Sergey Korolyov (1907–1966), USSR – first successful intercontinental ballistic missile (R-7 Semyorka), R-7 rocket family, Sputniks (including the first Earth-orbiting artificial satellite), Vostok program (including the first human spaceflight)
Nikolai Korotkov (1874–1920), Russian empire – auscultatory technique for blood pressure measurement
Semen Korsakov (1787–1853), Russian Empire – punched card for information storage
Mikhail Koshkin (1898–1940), Russia – T-34 medium tank, the best and most produced tank of World War II
Ognjeslav Kostović (1851–1916), Serbia/Russia – arborite (high-strength plywood, an early plastic)
Gleb Kotelnikov (1872–1944), Russia – knapsack parachute, drogue parachute
William Justin Kroll (1889–1973), Luxemburg/USA – Kroll process
Alexei Krylov (1863–1945), Russia – gyroscopic damping of ships
Ivan Kulibin (1735–1818), Russia – egg-shaped clock, candle searchlight, elevator using screw mechanisms, a self-rolling carriage featuring a flywheel, brake, gear box, and bearing, an early optical telegraph
Shen Kuo (1031–1095), China – improved gnomon, armillary sphere, clepsydra, and sighting tube
Igor Kurchatov (1903–1960), Russia – first nuclear power plant, first nuclear reactors for submarines and surface ships
Thomas E. Kurtz (born 1928), together with John G. Kemeny (1926–1992), USA/Hungary – BASIC (programming language)
Raymond Kurzweil (born 1948), Optical character recognition; flatbed scanner
Ken Kutaragi (born 1950), Nhật – PlayStation
Stephanie Kwolek (1923–2014), USA – Kevlar
John Howard Kyan (1774–1850), Ireland – The process of Kyanization used for wood preservation