Can a person be a carrier for a dominant genetic disorder

no. a person cannot be carrier of a dominant genetic disorder. if a certain disorder is a result of dominant gene both the homozygous and heterozygous individuals are sick and no one of them is carrier. The carrier state is seen only in a situation where genetic disorder is expressed when individuals inherits recessive alleles each from each parent. for someone to be a carrier in this situation, he/she must be heterozygous for certain disorder that is only expressed when an individuals is homozygous of recessive allelles.