Berry Pretty Vest
The Craft Yarn Council site has a nice selection of free patterns, including this vest decorated with strawberry motifs.
2 Way Vest
This bottom portion of this vest is knit sideways. It would look lovely knit with a handspun, variegated dye yarn.
Knit Vest #4
A vintage pattern for a vest knit with worsted weight yarn.
Lion Knit Vest
Lion Brand Yarns has a free pattern for a knit vest.
Solutia Ladies Knit Vest
A lovely vest pattern from Smart Yarns.
Knitting and Com has a nice selection of knitting patterns, including this vest dating to 1891.
An easy to knit vest with a hood.
Men’s Knit Vests
A men’s vest knit with a cable pattern.
Children’s Knit Vests
Fair Isle Vest
A pretty fair Isle vest / tank top pattern for a child.
Raglan Sweater Pattern
Seed Stitch Hat Pattern
ABC Knitting Pattern
Gaily Striped Ankle Warmers
Knitted Vest Pattern Books
Knitting: A Fair Isle Vest
Knits for Men: 20 Sweaters, Vests, and Accessories