The following events were published by DC Comics in the year 1990. This does not necessarily indicate that these storylines took place in the year 1990. The passage of time in the DC Universe is nebulous and subject to change and interpretation. Events from historical time periods are indexed under their corresponding years.
- The "present day" events of the Time Masters Limited Series are documented as occurring in 1990. Because of the absence of snow and open-topped cars in Upstate New York, it is likely summer.