Resin composition, cured product, prepreg, metal foil-clad laminate, resin sheet, and printed wiring board

A resin composition comprising a compound (A) represented by Formula (M1), a polymer (B) having a structural unit represented by Formula (V), and a cyanate ester compound;

• where in Formula (M1), RM1, RM2, RM3, and RM4 each independently represent a hydrogen atom or an organic group;
• RM5 and RM6 each independently represent a hydrogen atom or an alkyl group;
• ArM represents a divalent aromatic group;
• A is a four-to six-membered alicyclic group;
• RM7 and RM8 are each independently an alkyl group;
• mx is 1 or 2;
• 1x is 0 or 1;
• RM9 and RM10 each independently represent a hydrogen atom or an alkyl group;
• RM11, RM12, RM13, and RM14 each independently represent a hydrogen atom or an organic group;
• RM15 each independently represents an alkyl group having from 1 to 10 carbon atom(s), an alkyloxy group having from 1 to 10 carbon atom(s), an alkylthio group having from 1 to 10 carbon atom(s), an aryl group having from 6 to 10 carbon atoms, an aryloxy group having from 1 to 10 carbon atom(s), an arylthiol group having from 1 to 10 carbon atom(s), a halogen atom, a hydroxyl group, or a mercapto group;
• px represents an integer of from 0 to 3;
• and nx represents an integer of from 1 to 20,
• wherein Formula (V), Ar represents an aromatic hydrocarbon linking group;
• and * represents a bond position, where a vinyl group equivalent of the unit represented by the Formula (V) is 200 g/eq or more and 1200 g/eq or less.