I argue that parents ought to be allowed to authorize their child's pa
rticipation as an organ donor for another family member. I introduce a
model of decision making for children in intimate families which I ca
ll Constrained Parental Autonomy. This model permits wide parental dis
cretion which is constrained absolutely by a broadly defined principle
of respect for persons. In general, parental authorization alone is s
ufficient but I argue that the respect for persons constraint prevents
certain donations and requires the child's assent for other donations
. I also consider two controversial implications of the application of
this model: the objection that the model does not respect the child's
right to bodily integrity, and the objection that the model does not
and is unable to address intrafamilial disgreement.