Dilator or dilatator may refer to:
Dilator (medical instrument), a surgical instrument or medical implement used to induce dilation, such as: Cervical dilator Rectal dilator Vaginal dilator a pharmacological treatment used to induce dilation, such as: Cervical dilation#Induced dilation in childbirth Vasodilator Bronchodilator A muscle which causes dilation of a part, such as: Iris dilator muscle Dilator naris muscle
See also Sound (medical instrument), a device to penetrate or enlarge a body passage Stent, a device to keep a body passage open