The Greenock Philosophical Society has held an annual series of lectures on cultural and scientific subjects since it was instituted in 1861. Since 1876 these lectures have been held each autumn and winter in the Watt Hall of the McLean Museum and Art Gallery, Greenock. Since its inception many famous cultural and scientific figures have lectured before the Society such as Lord Kelvin, Professor Joule and Oscar Wilde. The lectures are open to members of the Society and to members of the public for a small fee. The 2009/2010 series of eighteen lectures will cover a wide range of topics from genealogy to archaeology.

The Club still meets at 7.30pm on Fridays at the Watt Hall of the McLean Museum.