Engineering
- Smoke and thread flow visualization Leonardo da Vinci and later experimenters · 1500
- Ship lines plan Shipbuilding practice; systematised by Fredrik Henrik af Chapman · 18th century
- Physical spline and ducks Shipbuilding and lofting practice · 1750
- GZ curve and cross curves of stability George Atwood (righting arm); later naval architecture practice · 1796-1900s
- Indicator diagram James Watt; John Southern · 1796
- Bonjean curves Bonjean, French naval engineer · 1800s
- Cam displacement diagram Machine-design practice; no single originator · 1800s-1900s
- Clapeyron pressure-volume diagram Benoît Paul Émile Clapeyron · 1834
- Shear and bending-moment diagram Out of the Culmann and Mohr graphic-statics tradition · 1860s
- Maxwell-Cremona reciprocal diagram J.C. Maxwell; Luigi Cremona · 1864/1872
- Culmann earth-pressure construction Karl Culmann · 1866
- Der Kern des Querschnitts, with the Centralellipse Karl Culmann · 1866
- Doppeltes Seilpolygon (two funicular polygons with two pole distances) Karl Culmann · 1866
- Graphical statics (force and funicular polygons) Karl Culmann · 1866
- Stress trajectory diagram Karl Culmann (drawn); James Clerk Maxwell (photoelastic) · 1866
- Influence line Emil Winkler and Christian Otto Mohr (independently) · 1867-1868
- Mass-haul (Brückner) diagram Brückner (attrib.) · 1870s
- S-N (Wohler) curve August Wöhler · 1870
- Gibbs thermodynamic surface Josiah Willard Gibbs · 1873
- Reciprocal diagram of forces with Bow's notation Robert H. Bow (space lettering and practical drawing), after J. C. Maxwell's reciprocal figures · 1873
- Williot (Williot-Mohr) displacement diagram Victor Williot · 1877
- Mohr's circle Otto Mohr · 1882
- Three-circle Mohr diagram Christian Otto Mohr · 1882
- Velocity and acceleration polygon Ludwig Burmester · 1888
- Zeuner / Reuleaux valve diagram (Das Diagramm von Reuleaux) Franz Reuleaux (this diagram), presented by Gustav Zeuner beside his own polar diagram · 1888
- Lilienthal polar diagram Otto Lilienthal · 1889
- Phasor diagram Charles Proteus Steinmetz · 1893
- Heyland circle diagram Alexander Heinrich Heyland · 1894
- Sankey diagram Matthew Henry Phineas Riall Sankey · 1898
- Goodman-Haigh constant-life diagram John Goodman (1899); Bernard Parker Haigh (1917) · 1899-1917
- Compressor map Turbomachinery testing practice; no single originator · 1900s
- Load-duration curve Electric utility planning practice; no single originator · 1900s
- Payload-range diagram Commercial aviation performance practice; no single originator · 1900s
- Pump and system head curve Hydraulic engineering practice; no single originator · 1900s
- Turbine hill chart Hydraulic turbine testing practice; no single originator · 1900s
- Mollier enthalpy-entropy (h-s) chart Richard Mollier · 1904
- Pressure-enthalpy (log p-h) chart Richard Mollier (family); refrigeration practice · 1904-1930s
- Psychrometric chart Willis Carrier (h-x version: Mollier 1923) · 1904/1911
- Solid plaster surface model Described by Willard Cope Brinton · 1914
- Stanton diagram Thomas Edward Stanton and John Ransome Pannell · 1914
- Graphical string-lining chart H. M. Church, Division Engineer, Baltimore & Ohio Railroad, Baltimore · 1915
- Signal progression time-space diagram US urban traffic signal practice; no single originator · 1920s
- Cyclograph (circular chart recorder) Instrument practice; described by Karsten · 1923
- Schmidt graphical method for transient conduction Ernst Schmidt · 1924
- McCabe-Thiele diagram McCabe & Thiele · 1925
- Ballistic computing cam Naval fire-control engineering · 1930
- Flow net Philipp Forchheimer (concept); Arthur Casagrande (construction rules) · 1930-1937
- TTT (time-temperature-transformation) diagram Edgar Collins Bain and Edmund S. Davenport · 1930
- V-n diagram (flight envelope) Airworthiness regulation practice; no single originator · 1930s-1940s
- Nyquist plot Harry Nyquist (Felix Strecker independently, 1930) · 1932
- CCT (continuous cooling transformation) diagram Developed from Erich Scheil's additivity rule; no single originator · 1935-1940s
- Power-demand relief model Detroit Edison Company · 1935
- Traffic fundamental diagram Bruce Douglas Greenshields · 1935
- Bode plot Hendrik Wade Bode · 1938-1945
- Smith chart Phillip H. Smith · 1939
- Eye diagram Telecommunications practice, Bell Laboratories; no single originator · 1940s
- Moody diagram Lewis F. Moody · 1944
- Heisler charts M.P. Heisler · 1947
- Nichols chart N.B. Nichols · 1947
- Root locus Walter R. Evans · 1948
- Schaeffler diagram Anton L. Schaeffler · 1949
- Carpet plot Aerospace design practice · 1950s
- Energy-maneuverability diagram John Boyd with Thomas P. Christie · 1966
- Layered three-dimensional Sankey diagram Center for Strategic and International Studies · 1970s
- Ashby material selection chart Michael Farries Ashby · 1989