Polyethylene　terephthalate　(PET)　fibers　are　green,　environmentally　friendly　materials.　They　mainly　come　from　recycled　plastic　bottles　and　other　products.　The　addition　of　PET　fibers　to　recycled　aggregate　concrete　(RAC)　has　the　potential　to　reduce　concrete　damage　and　increase　specimen　toughness.　In　this　study,　the　influences　of　recycled　coarse　aggregate　(RCA)　replacement　ratio　and　fiber　volume　ratio　on　the　impact　response　of　PET　fiber　reinforced　RAC　at　various　strain　rates　were　experimentally　investigated.　It　was　found　that　the　compressive　strength,　critical　strain,　and　toughness　grew　with　the　increasing　strain　rate,　followed　by　the　aggravation　of　the　concrete　damage.　Owing　to　the　strain　rate　effect,　the　failure　mode　of　concrete　specimen　at　a　high　strain　rate　was　different　from　that　under　a　quasi-static　loading.　This　led　to　the　reduction　of　differences　in　the　dynamic　compressive　strength　between　the　natural　and　recycled　aggregate　concrete　at　a　high　strain　rate.　Although　the　replacement　of　natural　coarse　aggregates　with　RCAs　resulted　in　the　decrease　in　the　dynamic　compressive　strength,　it　increased　the　critical　strain　of　the　specimen.　To　reduce　the　brittleness　of　concrete　materials,　flexible　fibers,　PET　fibers　were　added　into　the　concrete　matrix.　It　was　found　that　the　addition　of　PET　fibers　increased　the　critical　strain　and　significantly　reduced　concrete　damage.　The　empirical　equations　were　proposed　to　describe　the　rate-dependent　dynamic　compressive　strength,　critical　strain,　and　toughness　based　on　experimental　data.