X0102 24F-2NT LIVE 0000820892 XXXXXXXX N-1A NUVEEN INVESTMENT FUNDS INC 333 West Wacker Drive Chicago IL X1 60606 Nuveen Minnesota Municipal Bond Fund S000005559 C C000137679 A C000015136 I C000015138 811-05309 033-16905 05/31/2026 false false S000005559 285597876.96 193098350.51 0 193098350.51 92499526.45 0 0.0001381 12774.18 0 12774.18 Geoffrey Noyes MD Performance & Reporting, Fund Administration 08/27/2026 NUVEEN INVESTMENT FUNDS INC 333 West Wacker Drive Chicago IL X1 60606 Nuveen Nebraska Municipal Bond Fund S000005560 I C000015141 A C000015139 C C000137680 811-05309 033-16905 05/31/2026 false false S000005560 14960449.72 17363055.88 45822178.65 63185234.53 0 (48224784.81) 0.0001381 0 0 0 Geoffrey Noyes MD Performance & Reporting, Fund Administration 08/27/2026 NUVEEN INVESTMENT FUNDS INC 333 West Wacker Drive Chicago IL X1 60606 Nuveen Minnesota Intermediate Municipal Bond Fund S000005558 I C000015135 A C000015134 C C000137678 811-05309 033-16905 05/31/2026 false false S000005558 161508131.61 85227418.32 93412996.76 178640415.08 0 (17132283.47) 0.0001381 0 0 0 Geoffrey Noyes MD Performance & Reporting, Fund Administration 08/27/2026 NUVEEN INVESTMENT FUNDS INC 333 West Wacker Drive Chicago IL X1 60606 Nuveen Oregon Intermediate Municipal Bond Fund S000005562 A C000015145 I C000015146 C C000137681 811-05309 033-16905 05/31/2026 false false S000005562 89766627.16 40002652.25 73150437.43 113153089.68 0 (23386462.52) 0.0001381 0 0 0 Geoffrey Noyes MD Performance & Reporting, Fund Administration 08/27/2026