At least three ships of the Brazilian Navy have borne the name Alagoas
- Brazilian monitor Alagoas, a Pará-class monitor launched in 1867 and scrapped in 1900
- Brazilian destroyer Alagoas (1909), a Pará-class destroyer launched in 1909 and stricken in 1939
- Brazilian destroyer Alagoas (1973), a Mato Grosso-class destroyer formerly USS Buck acquired in 1973 and stricken in 1995
This article includes a list of ships with the same or similar names. If an internal link for a specific ship led you here, you may wish to change the link to point directly to the intended ship article, if one exists.