Miriam Benjamin (1861–1947), Washington, D.C. – ghế báo hiệu và chuông (được thông qua bởi Hạ viện và là tiền thân của hệ thống tín hiệu tiếp viên hàng không)
Vladimir Fyodorov (1874–1966), Nga – Fedorov Avtomat (súng trường chiến đấu (đạn cỡ lớn) (battle rifle) tự nạp đạn đầu tiên, được cho là khẩu súng trường tấn công (đạn cỡ trung bình) (Assault Rifle) đầu tiên)
Mikhail Gurevich (1893–1976), Nga – máy bay phản lực dòng MiG, bao gồm máy bay phản lực được sản xuất nhiều nhất thế giới MiG-15 và hầu hết các máy bay siêu âm MiG-21 (cùng với Artem Mikoyan)
Steve Jobs (1955–2011), USA – máy tính Apple Macintosh, iPod, iPhone, iPad and other devices and software operating systems and applications.
Amos Edward Joel, Jr. (1918–2008) USA – electrical engineer, known for several contributions and over seventy patents related to telecommunications switching systems
Scott A. Jones (born 1960), USA – created one of the most successful versions of voicemail as well as ChaCha Search, a human-assisted internet search engine
Tom Parry Jones (1935–2013), United Kingdom – first electronic Breathalyzer
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
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
Jerome H. Lemelson (1923–1997), USA – Inventions in the fields in which he patented make possible, wholly or in part, innovations like automated warehouses, industrial robots, cordless telephones, fax machines, videocassette recorders, camcorders, and the magnetic tape drive used in Sony's Walkman tape players.
Anthony Michell (1870–1959), Australia – tilting pad thrust bearing, crankless engine
Artem Mikoyan (1905–1970), Armenia/Russia – MiG-series fighter aircraft, including world's most produced jet aircraft MiG-15 and most produced supersonic aircraftMiG-21 (together with Mikhail Gurevich)
Alexander Mikulin (1895–1985), Russia – Mikulin AM-34 and other Soviet aircraft engines, co-developer of the Tsar Tank
Mikhail Mil (1909–1970), Russia – Mi-series helicopter aircraft, including Mil Mi-8 (the world's most-produced helicopter) and Mil Mi-12 (the world's largest helicopter)
David L. Mills (born 1938), USA – a.o. Fuzzball router, Network Time Protocol
Marvin Minsky (1927–2016), USA – a.o. Confocal microscopy
Andrey Nartov (1683–1756), Russia – first lathe with a mechanic cutting tool-supporting carriage and a set of gears, fast-fire battery on a rotating disc, screwmechanism for changing the artillery fire angle, gauge–boring lathe for cannon-making, early telescopic sight
Nikolai Nikitin (1907–1973), Russia – prestressed concrete with wire ropes structure (Ostankino Tower), Nikitin-Travush 4000 project (precursor to X-Seed 4000)
Nikolay Ivanovich Pirogov (1810–1881), Russia – early use of ether as anaesthetic, first anaesthesia in a field operation, various kinds of surgical operations
Alexander Procofieff de Seversky (1894–1974), Russia/United States of America – first gyroscopically stabilized bombsight, ionocraft, also developed air-to-air refueling
Petro Prokopovych (1775–1850), Russian Empire – early beehive frame, queen excluder and other beekeeping novelties
Sergey Prokudin-Gorsky (1863–1944), Russia/France – early colour photography method based on three colour channels, also colour film slides and colour motion pictures
Mark Publicover (born 1958), USA – First affordable trampoline safety net enclosure
Heinrich Rohrer (1933–2013), together with Gerd Binnig (1947–), Switzerland/Germany – Scanning tunneling microscope
Peter I the Great (Pyotr Alexeyevich Romanov), Tsar and Emperor of Russia (1672–1725), Russia – decimal currency, yacht club, sounding line with separating plummet (sounding weight probe)
Ida Rosenthal (1886–1973), Belarus/Russia/United States – modern bra (Maidenform), the standard of cup sizes, nursing bra, full-figured bra, the first seamed uplift bra (all with her husband William)
Leonty Shamshurenkov (1687–1758), Russia – first self-propelling carriage (a precursor to both bicycle and automobile), projects of an original odometer and self-propelling sledge
Ibn al-Shatir (1304–1375), Syria – "jewel box" device which combined a compass with a universal sundial
Bi Sheng (Chinese: 畢昇) (c. 990–1051), China – clay movable type printing
Igor Sikorsky (1889–1972), Russia/USA – first four-engine fixed-wing aircraft (Russky Vityaz), first airliner and purpose-designed bomber (Ilya Muromets), modern helicopter, Sikorsky-series helicopters
Bernard Silver (1924–1963), together with Norman Joseph Woodland (1921–2012), USA – Barcode
Kia Silverbrook (born 1958), Australia – Memjet printer, world's most prolific inventor
Vladimir Simonov (born 1935), Russia – APS Underwater Assault Rifle, SPP-1 underwater pistol
Alexander Smakula (1900–1983), Ukraine/Russia/USA – anti-reflective coating
Michael Smith (1932–2000), USA – Site-directed mutagenesis (molecular biology)
Oliver Smithies (1925–2017), together with Sir Martin John Evans (born 1941), and Mario Ramberg Capecchi (born 1937), USA – Knockout mouse, Gene targeting
Yefim Smolin, Russia – table-glass (stakan granyonyi)
Lyman Spitzer (1914–1997), USA – Stellarator (physics)
Bhargav Sri Prakash (born 1977), India/USA – Learnification platform at FriendsLearn, Virtual Reality System, electromagnetic collision avoidance system, OBD based in-vehicle powertrain performance measurement, rate based driver controls for drive by wire systems
Ladislas Starevich (1882–1965), Russia/France – puppet animation, live-action/animated film
Gary Starkweather (born 1938), USA – laser printer, color management
Boris Stechkin (1891–1969), Russia – co-developer of Sikorsky Ilya Muromets and Tsar Tank, developer of Soviet heat and aircraft engines
Eric Tigerstedt (1887–1925), Finland – Sound-on-film, triode vacuum tube
Kalman Tihanyi (1897–1947), Hungary – co-inventor of cathode ray tube and iconoscope
Mikhail Tikhonravov (1900–1974), Russia – co-developer of Sputnik 1 (the first artificial satellite) together with Korolyov and Keldysh, designer of further Sputniks
Richard Trevithick (1771–1833), UK – high-pressure steam engine, first full-scale steam locomotive
Franc Trkman (1903–1978), Slovenia – electrical switches, accessories for opening windows
Hans Tropsch (1889–1935), together with Franz Joseph Emil Fischer (1877–1947), Germany – Fischer–Tropsch process (refinery process)
Yuri Trutnev (born 1927), Russia – co-developer of the Tsar Bomb
Roger Y. Tsien (1952–2016), together with Osamu Shimomura (born 1928) and Martin Chalfie (born 1947), USA – Discovery and development of Green fluorescent protein