Two hundred and five (103 female and 102 male) children enrolled in school years 1 and 2 in the UK (mean age 6 years 1 month at Time 1) were tested twice over a 1-year period. The children reported the promise keeping and secret keeping behaviours of classmates (all peers and same-gender peers) and provided friendship nominations (Time 2 only). Round robin social relations analyses for all peers and same-gender peers revealed: (1) perceiver variance, demonstrating consistent individual differences in trust beliefs in peers; (2) target variance, demonstrating consistent individual differences in eliciting trust from peers; and, (3) dyadic reciprocity, demonstrating reciprocal trust between individuals. Replicability across measures, stability, and cross-measure stability of these effects were found for all peers only. As hypothesized, the perceiver and target effects of trust were associated with the number of friendships. The findings support the conclusion that young children demonstrate multiple components of trust in dyadic relationships, which are associated with their social relationships.