Variants

He 219 A-1
Proposed reconnaissance-bomber aircraft; project abandoned

He 219 A-2
Similar to A-0 but extended engine nacelles with additional fuel tanks, 1,670 PS DB 603AA engines, 85 built as of 30 November 1944

He 219 A-5
Planned three-seat night fighter, only some prototypes known to have been built from A-2 airframes

He 219 A-6
Planned Mosquito-hunter, stripped-down version of the He 219 A-2, armed with four 20 mm MG 151/20s

He 219 A-7
Improved night fighter version, powered by two 1,800 PS DB 603E engines, 210 ordered as of 30 November 1944

He 219 D-1
He 219 A-7 airframes adapted for Jumo 213E engines, five known to be delivered in 1945

He 319
An unbuilt multi-role aircraft project entirely unrelated to the He 219; only having the number sequence in common

He 419
Various derived projects culminating in He 419 B-1/R1, six of which were flown; use of the He 319 tail, very long-span wing of 59 square metres (635 sq ft), two 20 mm MG 151/20 in the wings and four 30 mm MK 108 in ventral housing. Speed of 679 km/h (422 mph) to 13,600 m (44,600 ft).

Letov LB-79
Two He219s built from recovered components in Czechoslovakia during 1950, with one being used as a jet engine test-bed.

Sources:
Gunston, Bill & Wood, Tony - Hitler's Luftwaffe, 1977, Salamander Books Ltd., London
Wikipedia - He 219