The 30-year-old Tottenham Hotspur centre back is likely to break the record when Belgium play Bosnia and Herzegovina and Cyprus in their final World Cup qualifiers.
"There's been a lot of talk about this golden generation, but it's important we can have leadership and personality creating a team," Martinez told reporters on Tuesday.
"I think that's where Jan is essential. He's a leader, he's a really experienced head and that's important. We've got a few of those and they're going to guide the younger talent.
"To get 95 caps at this stage of his career is a sensational achievement. That just shows you the professionalism that he has."
Martinez's side, who are on 22 points, have already qualified for next year's World Cup in Russia as winners of Group H.
(Reporting by Hardik Vyas in Bengaluru; editing by Sudipto Ganguly)
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