Update: As of February 4, 2022, applicants to the DV Lottery are no longer required to provide passport details.
You no longer need to have a passport to apply.
However, between calendar years 2019 and 2021, the US Government did require that applicants have a valid and unexpired passport in order to participate in the Green Card Lottery.
Exemptions to that rule were available to participants who did not have a passport but could claim one of three situations.
Applicants without a passport could still participate if:
These applicants had to indicate the reason for the exemption when they registered.
The previous passport rule was eliminated by court order in February 2022.