| Years in comics |
|---|
| Before the 1900s |
| 1900s |
| 1910s |
| 1920s |
| 1930s |
| 1940s |
| 1950s |
| 1960s |
| 1970s |
| 1980s |
| 1990s |
| 2000s |
| 2010s |
| 2020s |
Notable events of 1940 in comics.
The first issue of Batman's self-titled comic written by Bill Finger and drawn by Bob Kane, represented a milestone in more ways than one. With Robin now a partner to the Caped Crusader, villains needed to rise to the challenge, and this issue introduced two future legends: the Joker and Catwoman.