Kira Johnson Act This bill establishes grants to improve maternal health outcomes for racial and ethnic minority groups and other underserved populations. Specifically, the Department of Health and Human Services must award grants for community-based programs to improve maternal health outcomes for Black pregnant and postpartum individuals, as well as individuals in other underserved groups; training for health care providers and others who work in maternity care settings on reducing and preventing racism, bias, and discrimination; and respectful maternity care compliance programs in specified health care facilities. The National Academies of Sciences, Engineering, and Medicine must study issues related to the training programs, and the Government Accountability Office must study issues related to the compliance programs.