側衛戰機是蘇霍伊設計局研製的一系列單座雙發全天候空中優勢重型戰鬥機，主要任務是國土防空、護航、海上巡邏等。
北約組織給予的綽號是"側衛"也就是側衛戰機。有四種基本型號蘇-27 “側衛”、蘇-30“超級側衛”、蘇-33“海側衛”（即艦載機）、蘇-35“終極側衛”。
The Flanker fighter is a series of single-seater, dual-engine, all-weather air superiority heavy fighters developed by the Sukhoi Design Bureau. Its main tasks are homeland air defense, escort, and maritime patrols.
The nickname given by NATO is "Flanker", which is also called Flanker. There are four basic models of Su-27 "Flanker", Su-30 "Super Flanker", Su-33 "Sea Flanker" (ie carrier-based aircraft), and Su-35 "Ultimate Flanker".