Martinez likened N'Zogbia to Lionel Messi after the winger scored Wigan's second goal in a win over their fellow strugglers Wolves.
He said: 'The way Charlie plays, he has such an electric left foot.
"Messi can go both ways, and he's got a great finish. Low balance. The way he covers the ground, the way he works. It makes him a special player.
"Charlie knows he can go as high as he wants. He has gone on to a different level but I feel he can improve a lot still."