A　microelectromechanical　systems　system　(MEMS)　electromagnetic　swing-type　actuator　is　proposed　for　an　optical　fiber　switch　in　this　paper.　The　actuator　has　a　compact　size　of　5.1　×　5.1　×　5.3　mm3,　consisting　of　two　stators,　a　swing　disc　(rotator),　a　rotating　shaft,　and　protective　covers.　Multi-winding　stators　and　a　multipole　rotator　were　adopted　to　increase　the　output　torque　of　the　actuator.　The　actuator’s　working　principle　and　magnetic　circuit　were　analyzed.　The　calculation　results　show　that　the　actuator’s　output　torque　is　decisive　to　the　air　gap’s　magnetic　flux　density　between　the　stators　and　the　swing　disc.　NiFe　alloy　magnetic　cores　were　embedded　into　each　winding　center　to　increase　the　magnetic　flux　density.　A　special　manufacturing　process　was　developed　for　fabricating　the　stator　windings　on　the　ferrite　substrate.　Six　copper　windings　and　NiFe　magnetic　cores　were　electroplated　onto　the　ferrite　substrates.　The　corresponding　six　magnetic　poles　were　configured　to　the　SmCo　permanent　magnet　on　the　swing　disc.　A　magnetizing　device　with　a　particular　size　was　designed　and　fabricated　to　magnetize　the　permanent　magnet　of　the　swing　disc.　The　actuator　prototype　was　fabricated,　and　the　performance　was　tested.　The　results　show　that　the　actuator　has　a　large　output　torque　(40　μNm),　fast　response　(5　ms),　and　a　large　swing　angle　(22°).　©　2021　by　the　authors.　Licensee　MDPI,　Basel,　Switzerland.