The LFG Roland D.XV was a World War I German single-seat fighter aircraft ordered as a test bed for engine comparisons.

The D.XV was a cantilevered single bay biplane with a lower wing of shorter span than the upper, so the interplane struts leaned outwards.

Initially, both prototypes of the D.XV were powered by 160 hp (119 kW) Mercedes D.IIIa six-cylinder in-line engines, mounted with the tops of the cylinders just exposed.

This unit was later exchanged on the second prototype for a 185 hp (138 kW) BMW IIIa on the same type, mounted within a more circular cross-section, slender nose but with more of the cylinders visible.

The vertical tail was ovoid, with a broad, balanced rudder that extended down to a sizeable ventral fin, which also carried a tailskid.

[1][note 1] The third prototype of the D.XV had a completely different fuselage and empennage, which dispensed with the molded wooden shell of previous Roland aircraft and used a more conventional fabric over-frame construction typical of the period.