Karl Wilhelm Ludwig Müller (Latin: Carolus Müllerus; 13 February 1813 in Clausthal – 1894 in Göttingen) is best known for his still-useful Didot editions of fragmentary Greek authors, especially the monumental five-volume Fragmenta Historicorum Graecorum (FHG) (1841–1870), which is not yet completely superseded by the series Die Fragmente der griechischen Historiker begun by Felix Jacoby.

• De Aeschyli Septem Contra Thebas, Diss. Göttingen (1836): online
• Fragmenta Historicorum Graecorum (1841–1870): vols. 1, 2, 3, 4, 5
• Arriani Anabasis et Indica. Scriptores rerum Alexandri Magni (fragmenta). Pseudo-Callisthenes (1846): online
• Oratores Attici (1847–1858): vols. 1–2
• Strabonis Geographica (1853): online
• Herodoti Historiarum libri ix. Ctesiae Cnidii et Chronographorum Castoris Eratosthenis etc. fragmenta (1858): online
• Geographi Graeci minores (1861–1882): vol. 1, vol. 2, tabulae
• Claudii Ptolemaei Geographia (1883–1901): vol. 1:1, vol. 1:2

• Conrad Bursian, Geschichte der classischen Philologie in Deutschland, vol. 2, Munich, 1883, pp. 898–9.