These are some lesser-known or less historically important symbols meaning "female" and/or "woman".  (The well-known and historically important symbols with this meaning are included in another graphic, File:Female symbols.svg)
1) A crescent moon, which can symbolize a woman when a contrasting sun symbol (usually drawn with flaming rays) symbolizes a man.  This was used in some allegorical contexts, and supposedly also on the doors of early 19th-century women's outhouses in the United States.
2) The main symbol for a woman in Chapter I of Rudolf Koch's Book of Signs.  The corresponding symbol for a man is a vertical line with two upwards diagonal lines branching off near the top.  (This is also used as the sign for "woman" in Blissymbols, but the bottom corners would be rounded rather than angled..)
3) A downward-pointing angle (the "chalice") which is used in some occultistic/neopagan contexts (the corresponding male symbol being the upward-pointing angle or "blade").  This can also appear as a downward-pointing triangle, though a basic unelaborated triangle is actually rather ambiguous in meaning (Rudolf Koch prefers the upward-pointing triangle as a female sign instead, and in some versions of modern bathroom symbols, a circle on top of an upward-pointing triangle -- similar to the ancient symbol of the goddess Tanit -- indicates a women's restroom, while a circle on top of a downward-pointing triangle indicates a men's restroom).  For a slightly elaborated version of a downward-pointing triangle which is an unambiguous female symbol, see File:Female symbols.svg...
4) The female symbol of the "Labanotation" dance writing system. The corresponding male symbol would change the inside hollow circle to a filled circle.

Note that a simple circle often indicates woman or female in genealogical charts, sociograms, kinship terminology diagrams, etc.  However, a circle would not be commonly understood as meaning "woman"/"female" as a stand-alone symbol (outside the context of such a diagram), and so is not included in this image or in File:Female symbols.svg.
This vector image includes elements that have been taken or adapted from this file:
AnonMoos