'Age of Reason' is a studio album by Australian pop singer John Farnham.

It was released in Australia on 25 July 1988 and debuted at No. 1 on the (ARIA) Albums Chart in August and remained on top for eight weeks.

It was the follow-up to his previous No. 1 album, Whispering Jack, and was the highest selling album in Australia in 1988.

As of 1997, it was 11x platinum indicating sales of over 770,000 units.

Critically considered one of Farnham's best albums, with "Age of Reason" and "Beyond the Call" being about the urgency for the world to wake up and solve its problems.