Graphene　nanoplatelet　(GNP)　and　multi-walled　carbon　nanotube　(MWCNT)　hybrid　films　were　prepared　with　the　aid　of　surfactant　Triton　X-100　and　sonication　through　a　vacuum　filtration　process.　The　influence　of　GNP　content　ranging　from　0　to　50　wt.%　on　the　mechanical　and　electrical　properties　was　investigated　using　the　tensile　test　and　Hall　effect　measurement,　respectively.　It　showed　that　the　tensile　strength　of　the　hybrid　film　is　decreasing　with　the　increase　of　the　GNP　content　while　the　electrical　conductivity　exhibits　an　opposite　trend.　The　effectiveness　of　the　MWCNT/GNP　hybrid　film　as　a　strain　sensor　is　presented.　The　specimen　is　subjected　to　a　flexural　loading,　and　the　electrical　resistance　measured　by　a　two-point　probe　method　is　found　to　be　function　of　applied　strain.　Experimental　results　demonstrate　that　there　are　two　different　linear　strain-sensing　stages　(0–0.2%　and　0.2–1%)　in　the　resistance　of　the　hybrid　film　with　applied　strain.　The　strain　sensitivity　is　increasing　with　the　increase　of　the　GNP　content.　In　addition,　the　repeatability　and　stability　of　the　strain　sensitivity　of　the　hybrid　film　were　conformed　through　the　cyclic　loading–unloading　tests.　The　MWCNT/GNP　hybrid　film　shows　promising　application　for　strain　sensing.　©　2018　by　the　authors.　Licensee　MDPI,　Basel,　Switzerland.