<PAGE> PAGE 1
000 B000000 03/31/2000
000 C000000 0000315543
000 D000000 N
000 E000000 NC
000 F000000 Y
000 G000000 Y
000 H000000 N
000 I000000 6.1
000 J000000 A
001 A000000 IAI INVESTMENT FUNDS IV, INC.
001 B000000 811-3004
001 C000000 4142873572
002 A000000 615 E. MICHIGAN STREET
002 B000000 MILWAUKEE
002 C000000 WI
002 D010000 53202
003 000000 N
004 000000 N
005 000000 N
006 000000 N
007 A000000 Y
007 B000000 1
007 C010100 1
007 C020100 IAI REGIONAL FUND
007 C030100 N
007 C010200 2
007 C010300 3
007 C010400 4
007 C010500 5
007 C010600 6
007 C010700 7
007 C010800 8
007 C010900 9
007 C011000 10
077 A000000 Y
077 B000000 Y
077 C000000 N
077 D000000 N
077 E000000 N
077 F000000 N
077 G000000 N
077 H000000 N
077 I000000 N
077 J000000 N
077 K000000 N
077 L000000 N
077 M000000 N
077 N000000 N
077 O000000 N
077 P000000 N
077 Q010000 Y
077 Q020000 N
077 Q030000 N
SIGNATURE CHRISTINE GRAY
TITLE ASSISTANT SECRETARY
