Batman is an ongoing American comic book series featuring the DC Comics superhero Batman as its main protagonist. The character first appeared in Detective Comics #27 (cover dated May 1939). Batman proved to be so popular that a self-titled ongoing comic book series began publication with a cover date of Spring 1940.[2][3] It was first advertised in early April 1940, one month after the first appearance of his new sidekick, Robin, the Boy Wonder.

Though the Batman comic book was initially launched as a quarterly publication, it later became a bimonthly series through the late 1950s, after which it became a monthly publication and has remained so since. In September 2011, The New 52 rebooted DC's continuity. In this new timeline, the original Batman series ended and was relaunched with a new first issue.

In 2016, DC Comics began a second relaunch of its entire line of titles called DC Rebirth. Batman (vol. 3) #1 (August 2016) was the debut bimonthly relaunch of the comic book series.