Analysis of the attitudes of a 1977 cross-sectional sample of 1,530 American adults concerining euthanasia and suicide indicates that sex, age and education are significant variables. Males, who are younger and better educated, are more likely to approve of euthanasia and suicide when a person has an incurable disease. Religious affiliation was not an important variable, although those who were frequent church-service attenders were highly likely to reject euthanasia and suicide.(DD)