Orban, Imre · Budapest · b. 1898
Orelli, Josef · Rome
Orestad, Ivar · Bodo · 1883–1963
Orlandi, Orlando · Ascoli Piceno · b. 1875
Orlecke, Heinrich Christian · Tangermunde · worked 1829
Ornati, Giuseppe · Albairate, Milan · 1885–1965
Orselli, Enrico · Ferrara, Pesaro · 1891–1955
Ortega, Ascencio · Madrid · d. 1845
Ortega, Mariano · Madrid · worked 1820–1855
Ortega, Silverio · Madrid · worked 1770–1820
Orth, George O. · Seattle · 1885–1962
Orth, Louis · Pont a Mousson · worked 1870
Orto, Joseph · Budapest · b. 1886
Orton, Phillip · Hereford · worked 1845–1860
Ory · Paris · worked 1790–1814
Orzero, Tommasso · Turin · worked 1850
Osborne, Henry · Sherborne · worked 1860
Osborne, Samuel · Leamington Spa · worked 1890
Osch, E P van · Maastricht
Osgar, Michael P. · St. Cloud · b. 1899
Osmond, William · Evesham · worked 1810–1835
Ostensson, Knut · Tranas · b. 1868
Ostler, Anton · Mittenwald · b. 1895
Ostrander, Carl Thomas · Seattle · b. 1883
Ostrander, Eugene · Oriskany Falls · 1849–1927
Ostroy, Joseph · Zegestov · b. 1897
Otho, Karl August · Leipzig · 1836–1892
Ott, Joseph · Dlouha Ves · worked 1850
Ottley, Jacob · Bristol · worked 1800
Otto, Bernhard August · Markneukirchen · b. 1882
Otto, Carl August · Jena · 1801–1883
Otto, Carl Christian · Weimar · 1792–1853
Otto, Carl Wilhelm Friedrich · Jena · 1808–1884
Otto, Carl Gustav · Markneukirchen · b. 1857
Otto, Ernst Albin · Markneukirchen · 1863–1917
Otto, Ernst Louis Georg · Dusseldorf
Otto, Georg August Gottfried · Weimar · 1789–1857
Otto, Gustav · Markneukirchen · 1831–1905
Otto, Gustav Karl · Markneukirchen · 1859–1924
Otto, Heinrich Ferdinand · Markneukirchen · 1834–1905
Otto, Heinrich Wilhelm · Amsterdam and 2 more
Otto, Hermann · Saint Petersburg · 1859–1884
Otto, Jacob August · Gotha · 1760–1829
Otto, Johann Karl August · Mecklenburg · 1801–1883
Otto, Louis · Dresden and 2 more · 1844–1920
Otto, Ludwig · Cologne and 2 more · 1821–1887
Otto, Oskar Robert · Markneukirchen · 1867–1943
Otto, Otto · Markneukirchen · b. 1871
Otto, Paul Max · Markneukirchen · 1880–1945
Otto, Ulrich · Markneukirchen · b. 1872
