Possibly. Meta-analyses suggest that coffee consumption was associated with a reduction in all-cause mortality of up to 17% in men and 37% in women. Consuming larger quantities of coffee was associated with greater reductions in mortality. Studies have suggested that coffee consumption may reduce the risk of specific diseases of aging such as heart disease and cancer, but not all research is in agreement and some data is likely to be biased.
A summary of the findings from 6 meta-analyses of the effects of coffee consumption on mortality (Source)
While there is good evidence that caffeine can improve life expectancy, caffeine alone is unlikely to fully explain the effects of coffee. It is thought that antioxidant and anti-inflammatory compounds within coffee (such as polyphenols) are likely to play a significant role.