Low　friction　polytetrafluoroethylene　(PTFE)　has　been　studied　extensively　and　is　widely　used　in　tribological　applications　in　bulk　form.　Tribological　properties　of　thin　film　PTFE　are　less　reported　due　to　its　poor　wear　resistance.　Here,　we　show　that　by　incorporating　Au　nanoparticles　in　PTFE　thin　film,　it　is　possible　to　significantly　increase　the　wear　resistance　of　the　film.　PTFE/Au　nanoparticle　composite　thin　films　were　fabricated　on　stainless　steel　substrates　by　dipping　the　substrate　into　a　mixture　of　Au　nanoparticle　solution　and　PTFE　aqueous　dispersion.　The　friction　and　wear　test　results　show　that　Au　nanoparticles　significantly　reduced　the　wear　of　the　PTFE　thin　film　while　preserving　its　low　coefficient　of　friction　(COF).　Furthermore,　substrate　surface　topography　was　found　to　have　a　significant　effect　on　the　friction　and　wear　performances.　©　2011　by　ASME.