Heinrich Theodor Dittrich ( Latin: Henricus Theodorus Dittricus; ^[1] fl. mid-19th century) was a German philologist and librarian. ^{[1] [2]}

Under the pseudonym B. Fabricius, he published a Latin edition on the surviving Greek fragments of the Periplus of the Outer Sea (i.e., the World Ocean) and epitomes composed by Marcian ^[3] and the Periegesis or Periodos misattributed to Scymnus; ^[4] an overview of his thoughts on the Greek bucolic poet Theocritus ^[5] and on the lesser Greek geographers; ^[6] heavily annotated Latin and German translations of the Greek Periplus of the Erythraean Sea (i.e., the Red Sea and Indian Ocean) misattributed to Arrian; ^{[7] [8]} a Latin translation of Isidore's Greek Parthian Stations; ^[9] a heavily annotated Latin translation of the Greek Periplus of the Internal Seas (i.e., the Mediterranean and Black Seas) misattributed to Scylax; ^[10] and a heavily annotated edition of the Latin elegies of Albius Tibullus. ^[11]

• De Cathedris Feminarum Romanarum Dissertatio, Staritz, 1836. (in Latin)
• Lectiones Marcianeae..., Dresden: B. G. Teubner, 1843. (in Latin) & (in Greek)
• Lectiones Scymnianae..., Dresden: B. G. Teubner, 1844. (in Latin) & (in Greek)
• Beiträge zur Erklärung und Kritik des Theokritos, Dresden: Trubner'schen Officin, 1844. (in German)
• Ueber die Handschriften der Kleinen Griechischen Geographen..., Dresden: Teubnerschen Officin, 1845. (in German)
• Arriani Alexandrini Periplus Maris Erythraei (in Greek), Dresden: H.M. Gottschalk, 1849 & (in Latin)
• Isidori Chararceni Stathmos Parthicos..., Dresden: H.M. Gottschalk, 1849 (in Latin)
• Anonymi Vulgo Scylacis Caryandensis Periplum Maris Interni (2nd ed.), Leipzig: B. G. Teubner, 1878. (in Greek) & (in Latin)
• Die Elegien des Albius Tibullus und einiger Zeitgenossen, Berlin: Nicolaische Verlags-Buchhandlung R. Stricker, 1881. (in Latin) & (in German)
• Der Periplus des Erythräischen Meeres von einem Unbekannten, Leipzig: Veit & Co., 1883. (in Greek) & (in German)