Contradictory previous research results showing that (1) language knowledge does not decrease with age; and (2) age differences exist in semantic strategies for memory recall provide the impetus for a study of semantic priming in young adults (mean age = 20) and older adults (mean age = 70) by providing target and prime words with six different types of categorical relationships. Accuracy and response time for the primed trials were measured. Results show no evidence for age differences in structural semantic memory even when a wide variety of semantic relationships between target and prime word are considered and the response latencies for lexical decisions are analyzed over multiple trial blocks. While differing types of semantic relationships produce differing degrees of response time facilitation, there is no age difference in which semantic relationship produces most facilitation. (MSE)