Ranking and values
Values in the units stated by the source graphic.
GDP (PPP) rankings: OIC major countries (2026)| # | Country | GDP (PPP) |
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| 1 | Indonesia | $5.45T |
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| 2 | Turkey | $4.03T |
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| 3 | Saudi Arabia | $2.89T |
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| 4 | Egypt | $2.57T |
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| 5 | Nigeria | $2.42T |
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| 6 | Bangladesh | $1.92T |
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| 7 | Pakistan | $1.80T |
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| 8 | Iran | $1.78T |
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| 9 | Malaysia | $1.61T |
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| 10 | United Arab Emirates | $1.01T |
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