X0101 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 05/31/2024 false false S000005559 254444622.8 188985377.92 99077349 288062726.92 0 (33618104.12) 0.0001476 0 0 0 0 0 Jon Scott Meissner MD Tax & Financial Reporting, Fund Administration 08/23/2024 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 05/31/2024 false false S000005558 130193056.35 145993852.11 76970433 222964285.11 0 (92771228.76) 0.0001476 0 0 0 0 0 Jon Scott Meissner MD Tax & Financial Reporting, Fund Administration 08/23/2024 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 05/31/2024 false false S000005562 74630561.71 74660602.14 75987106 150647708.14 0 (76017146.43) 0.0001476 0 0 0 0 0 Jon Scott Meissner MD Tax & Financial Reporting, Fund Administration 08/23/2024 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 05/31/2024 false false S000005560 18007384.11 44210416.76 17284138 61494554.76 0 (43487170.65) 0.0001476 0 0 0 0 0 Jon Scott Meissner MD Tax & Financial Reporting, Fund Administration 08/23/2024