Kalmar "Ondaatje" sunan mahaifi ce don haka ba ta da ma'anar ƙamus. Sunan mahaifi na Yaren mutanen Holland ne wanda aka samo daga sunan wani gari a cikin Netherlands da ake kira Onden ko Onderen. Hakanan ana iya rubuta sunan a matsayin "Ondatje" ko "Ondaatchi" dangane da yankin ko tarihin iyali. Shahararren mai ɗaukar wannan sunan suna shine marubucin marubuci kuma mawaƙi ɗan ƙasar Kanada-Sri Lanka, Michael Ondaatje.