Henrietta Swan Leavitt (; July 4, 1868 <unk> December 12, 1921) waxay ahayd astronomer Maraykan ah. Waxay ka qalin jabisay Radcliffe College, waxay ka shaqaysay Harvard College Observatory sida "kombiyuutar", oo loo xilsaaray baaritaanka saxannada sawirada si loo cabbiro loona kala saaro iftiinka xiddigaha. Shaqadan waxay keentay inay ogaato xiriirka ka dhexeeya iftiinka iyo muddada Cepheid.
cilmiga xiddigiska