We have measured the low temperature specific heat (1.6 to 4 K) of six commercial aluminum alloys (ASM types 7075, 7079, 2219, 2014, 2618, and 2024). The results are given in the form of fits to the relationC=&ggr;T+BT3. Some alloys show deviations from this relation at the lowest temperatures. This may be due to the presence of 3dtransition elements in these alloys.