Pioneer Secondary School (abbreviation: PSS) was a government co-educational secondary school in Jurong West, Singapore.

While waiting for its school building to be ready, it was temporarily housed at Hong Kah Secondary School under the same principal, Mrs Yeo Chin Nam.

Mr Satianathan S/O K Ndarajah, the previous principal, took over the school in December 2005.

Now, the position has been taken over by Mr Mark Chan as of 15 December 2011.

In March 2016, it was announced that due to falling student cohort sizes the school would be merged with Boon Lay Secondary School.