The list of shipwrecks in July 1840 includes ships sunk, foundered, wrecked, grounded, or otherwise lost during July 1840.
1 July
2 July
3 July
4 July
5 July
6 July
7 July
8 July
10 July
11 July
12 July
15 July
16 July
17 July
18 July
19 July
20 July
22 July
23 July
24 July
25 July
26 July
28 July
29 July
Unknown date
References