Killing Is My Business... And Business Is Good! adalah album pertama Megadeth, diterbitkan pada 1985 oleh Combat Records.

1. "Last Rites/Loved To Deth"
2. "Killing Is My Business... And Business Is Good!"
3. "Skull Beneath The Skin"
4. "These Boots" (sample^ⓘ)
5. "Rattlehead"
6. "Chosen Ones"
7. "Looking Down The Cross"
8. "Mechanix"

• Dave Mustaine - guitar, vocals, piano
• Chris Poland - guitar
• David Ellefson - bass guitar, back-up vocals
• Gar Samuelson - drums, timpani