Single　metal　site　catalysts　are　the　most　promising　candidates　to　replace　platinum-group-metal　(PGM)　catalysts　for　the　oxygen　reduction　reaction　(ORR),　yet　insufficient　performance　and　scalable　preparation　approaches　remain　great　challenges.　Here,　we　report　a　nitrogen　(N)/sulfur　(S)　codoped　single　Fe　site　catalyst　(Fe-N/S-C)　through　a　chemical　vapor　deposition　(CVD)　strategy.　Using　the　cyclopentadiene-shielded　Fe　atom　ferrocene　(Fc)　as　the　precursor,　atomically　dispersed　single　Fe　sites　were　successfully　embedded　into　the　N,　S　codoped　2D　carbon　nanosheets.　The　superior　catalytic　activity　for　the　ORR　in　alkaline　media　is　stemmed　from　the　N,　S　codoping,　tuning　the　optimal　charge　distribution　of　Fe　sites.　In　addition,　the　CVD　approach　could　surpress　the　formation　of　iron-carbide-containing　iron　clusters　(＂FexC/Fe＂),　thereby　leading　to　high　surface　areas　and　porosity.　Furthermore,　the　Fe-N/S-C　catalyst　was　further　studied　as　a　cathode　catalyst　in　direct　methanol　fuel　cells　showing　encouraging　performance.