D10, or similar, may refer to:
The D-10 is a Soviet 100 mm tank gun developed in late World War II. It originally equipped the SU-100 tank destroyers and was later selected for the T-55 tank, equipping these as late as 1979. On the T-55 the D-10 continues to be in active service in many countries.
At the beginning of 1944, the T-34 tank's F-34 76.2 mm tank gun was replaced by a more powerful 85 mm gun. This rendered the year-old SU-85 tank destroyer effectively obsolescent, since its D-5T 85 mm gun was now also fielded by a more flexible medium tank. F. F. Petrov's Design Bureau at Artillery Factory No. 9 was assigned the task of producing a 100 mm anti-tank gun that could be used on the SU-85 chassis, for the proposed SU-100. Petrov's team modified the S-34 naval gun for use in an armoured fighting vehicle.
The D-10 is a high-velocity gun of 100 mm bore diameter, with a barrel length of 53.5 calibres. Muzzle velocity of 895 m/s gave it good anti-tank performance by late-war standards. Initially it could penetrate about 149 mm of steel armor plate at 1,000 m range, superior to the German 75 mm KwK 42 mounted on the Panther tank and the Tiger I's 88 mm KwK 36 gun. Testing against Panther tanks at Kubinka, showed the D-10T could penetrate the Panther's glacis at its maximum range of 1500 m. This performance grew when APDS and more modern ammunition types were developed after the war. After the war a more effective high-explosive shell was also developed, taking advantage of the larger 100 mm bore.
The D10 expressway is a partially built expressway in the central Croatia northeast from Zagreb extending towards the city of Vrbovec. It is currently executed as a 23 km (14 mi) long expressway between the A4 motorway Sveta Helena interchange south and east of Vrbovec. It was planned to be upgraded to a full motorway and extended northward to Križevci, Koprivnica and Gola, Koprivnica-Križevci County border crossing to Hungary. The D10 expressway represents the western arm of the so-called Podravina Y, as the eastern arm is planned to be the D12 expressway.
Traffic is regularly counted and reported by Hrvatske ceste, operator of the road.