There are no fighter aircraft with three jet engines
all of the same type, however there are plenty of 3 engined transports and a few 3 engine
bombers.
I can think of only two 3-engined jet fighters-
Yakovlev Yak-41 / Yak-141
Nato designation "Freestyle"
V/STOL multirole fighter, rather similar to JSF. Project is struggling on small budget, and not really going anywhere now. Some Yak-141 people
jumped ship to work on JSF, while Yakovlev themselves are entertaining investors in South America and Asia to continue Yak-141 development.
engines:
1 x Kobchenko/Soyuz R-79V-300
2 x Glushenko/Rybinsk RD-41
Yakovlev Yak-36MP / Yak-38
Nato designation "Forger"
VTOL naval strike aircraft. Approximately 230 built. Operational on
Kiev class light carriers and the
Admiral Gorshkov. Essentially
retired since 1993 as Russian Navy no longer has carriers at sea.
engines:
1 x Tumansky/Soyuz R-27V-300 (typical) or 1 x Lyulka AL-21 (only Yak-38I)
2 x Koliesov RD-36-35FV(Yak-36M), RD-36-35FVR(Yak-38)
Yak V/STOL history:
Les Yakovlev à décollage vertical
Yak-141:
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Yak-38:
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Both:
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