| Predecessor: | SEM Maritime Company |
| Foundation: | 2003 |
| Defunct: | 2014 |
| Area Served: | Adriatic Sea |
| Industry: | Passenger transportation Freight transportation |
| Owner: | SEM Maritime Company |
| Homepage: | www.blueline-ferries.com |
Blue Line International was a ferry company owned by the Croatia-based SEM Maritime Company (SMC). The Blue Line brand was established in 2003 as a marketing name for SMC's Croatia—Italy services, coinciding with the purchase of the MV Ancona.
The company operated a regular around-the-year service between Ancona and Split, alongside the seasonal lines Ancona—Hvar and Ancona—Vis.