At least three commercial ships were named Dora in the late 19th and early 20th centuries:
- Dora, launched in 1880 for use in the coastal trade between California and Alaska.
- Dora, launched in 1889 for use by the London and South Western Railway, was renamed the SS Douglas.
- Dora, a 13-ton sloop built in 1892 that foundered Aug. 27, 1911 at Charleston, South Carolina.
- Dora (sternwheeler), a 1910 steamboat in Oregon
- SS Dora, a Design 1022 ship launched in 1919 as SS Inspector, converted into a tanker, and subsequently renamed SS Comol Cuba