Yes, historians have spent the last 50-odd years learning to pay attention to the women of the past. In some cases, like medieval religion and cultural history, this development has radically changed our understanding.

If you're interested, I wrote about historians' changing attitudes towards women last week.

Although some historians do consider themselves, specifically, "women's historians," others who focus on women explicitly reject the title: women are a part of ALL history, not an isolated branch that can be compartmentalized and ignored by 'mainstream history'.

Gender history (often part of wider gender studies) is an umbrella discipline that includes this. It also looks at the meaning of masculinity, analyses sexuality or the way gender was constructed in the past and things like that.