A42 may refer to : A42 road (England), a road connecting Kegworth and Appleby Magna A42 road (Northern Ireland), a road connecting Maghera and Carnlough A42 motorway (France), a road connecting Lyon and Pont-d'Ain A 42 motorway (Germany), a road connecting Kamp-Lintfort and Castrop-Rauxel A-42 motorway (Spain), a road connecting Madrid and Toledo A.42 may refer to : Aero A.42, a Czechoslovakian bomber aircraft of 1929 that was only ever produced in prototype form A42 tank, a British War Office designation for the "Heavy Churchill" (Mk.XIII) tank