The aim of the current study is to investigate whether 6-year-old children's temperament predict their level of attachment. The study has a descriptive design. During the Spring term of the academic year 2017-2018, 59 children (60-72-month old) and their mothers in City of Tekirdag (Süleymanpasa District) volunteered to participate in the study. Demographics Form, Incomplete Stories with Doll Family and Short Temperament Scale for Children were used for the data collection. Descriptive statistics were performed to summarize the ISDF and STSC scores in the first step of the data analysis. A multiple linear regression was carried out and attachment scores and temperament sub-dimension scores were assigned as the dependent and independent variables, respectively. Multiple linear regression analyses revealed that the independent variables in the model predicted 16% of the dependent variable (R[superscript 2] = 0.157), which meant that the children's temperament predicted 16% of their attachment levels. Reactivity, sociability, rhythmicity and the linear combination of children's reactivity, persistence, sociability and rhythmicity did not predict children's attachment, but persistence did.