A bill to promote public health and welfare by preventing unwanted conceptions and reducing the need for abortions among all women, especially teenagers, through improved and expanded family planning services and population research activities by the Federal Government, and for other purposes.

Comprehensive Family Planning Services, Research in Human Reproduction, and Prevention of Unwanted Teenage Pregnancy Act - Amends the Public Health Service Act to authorize the Secretary of Health, Education, and Welfare to make grants to, and enter into contracts with, public or nonprofit entities to assist: (1) in the establishment, maintenance and expansion of voluntary family planning projects which offer a broad range of family planning methods (including natural family planning methods) to all persons who need and desire them; (2) in the provision through such projects of comprehensive services appropriate to the needs of teenagers who are at risk of unwanted pregnancy; and (3) in the establishment and operation of demonstration projects aimed toward the alleviation of problems of infertility through counseling, referral, and medical services to persons who need and desire them.

Authorizes the Secretary to make grants to public or nonprofit private entities and enter into contracts with public or nonprofit private entities and individuals: (1) to establish and maintain a network of community-based informational and educational services designed to help adolescents more fully understand the risks and consequences of teenage pregnancy and childbearing; and (2) to assist in developing appropriate information and educational materials for dissemination to such community-based services.

Requires the Secretary to annually report a plan for achieving the purposes set forth in this Act with particular emphasis on assistance to adolescents.

Authorizes the appropriation of specified amounts for fiscal years 1979 through 1981 to carry out the programs specified in this Act.