The K1810VM86 (Russian: К1810ВМ86)[1][2] is a Soviet 16-bit microprocessor, a clone of the Intel 8086 CPU with which it is binary and pin compatible.

A clone of the related Intel 8088 with its 8-bit bus was manufactured as the K1810VM88 (Russian: К1810ВМ88), also in plastic and ceramic packages.

Unlike the earlier KR580VM80A which was very popular in the Soviet Union but little used elsewhere, the K1810VM86 was widely used throughout the Eastern Bloc due to it being one of the first 16-bit microprocessors available there and among those the only one with an x86 instruction set, allowing it to run MS-DOS.

Examples for personal computers built based on the K1810VM86 (or the 8-bit bus variant K1810VM88) are:[5] CMOS versions equivalent to the Intel 80C86 were named KR1834VM86 (КР1834ВМ86; developed in Kyiv in 1989 / 1990 and then manufactured in Minsk)[6][7][8] and KR1835VM86 (КР1835ВМ86).

[6][8][9] The original KR1810VM86 is still shown on the price list of 15 August 2022 of the "Kvazar" plant in Kyiv[10] together with various support chips of the K580 and K1810 series, while the newer CMOS versions appear to be no longer in production.