| Ill-Natured Spiritual Invasion | |
| Type: | studio |
| Artist: | Old Man's Child |
| Cover: | Old Man's Child - Ill-Natured Spiritual Invasion.jpg |
| Released: | 23 June 1998 |
| Recorded: | March – April 1998 |
| Genre: | Melodic black metal |
| Length: | 35:19 |
| Label: | Century Media Records |
| Producer: | Galder |
| Prev Title: | The Pagan Prosperity |
| Prev Year: | 1997 |
| Next Title: | Revelation 666 – The Curse of Damnation |
| Next Year: | 1999 |
Ill-Natured Spiritual Invasion is the third studio album by Norwegian black metal band Old Man's Child. Most of the vocals were improvised by Galder while in the studio.
All music, lyrics and arrangements by Galder.