|- |aa = || Airy (1830)|- | ab = || Australian National (1966)|- | ac = || Bessel 1841|- | ad = || Clarke 1858|- | ae = || Clarke 1866|- | af = || Clarke 1880|- | ag = || Clarke 1880 (Modified)|- | ah = || Clarke 1880 (Palestine)|- | ai = || Danish (Andreae)|- | aj = || Delambre (Carte de France)|- | ak = || Everest (1830)|- | al = || Everest (Malaya)|- | am = || Everest (Borneo)|- | an = || Helmert 1906|- | ao = || Hayford 1909 (and 1910) <br />''International 1924'' see Hayford (ao)|- | ap = || Kragenhoff|- | aq = || Krasovskiy 1848|- | ar = || Müffling 1821|- | as = || S.E. Asia ("Fischer 155") |- | at = || Struve|- | ba = || Svanberg|- | bb = || Zhylinskiy ("Adjustment Spheroid")|- | bc = || Walbeck|- | bd = || War Office (McCaw) 1924|- | be = || World Geodetic System (1972-)|- | uu = || unknown spheroid|- | zz = || other known spheroid of construction of the map|-