Here you will find a list of existing agencies and organizations that cover sexual harassment in the workplace.
No Matter What...
Whether you think you will want to take legal action, simply report it to your employer, or try to handle it on your own to start:  DOCUMENT EVERYTHING.  Do it before you talk to anyone, so that it is easy and convenient for you to turn over if needed down the road.
The first step is to figure out if you've been discriminated against, as a result of sexism, or as a consequence of speaking up about harassment.  This is frustrating when you haven't experienced discrimination (yet), only the harassment itself.  Even more frustrating when all the information is geared to legal remedies, and you don't care about that, you just want the harassment to stop.  Hang in there.
Federal Agencies 
These federal agencies have a mission to protect your civil rights, and include ​ discrimination in their agenda:
  1. (EEOC) Equal Employment Opportunity Commission
    Harassment is unwelcome conduct that is based on race, color, religion, sex (including pregnancy), national origin, age (40 or older), disability or genetic information. >>You have to file a claim with the EEOC before you can proceed with a lawsuit >>There is a 180 day timeframe for filing >> Consult with a lawyer >> Information on filing a complaint:
  2. U.S. Commission on Civil Rights
    Established as an independent, bipartisan, fact-finding federal agency, our mission is to inform the development of national civil rights policy and enhance enforcement of federal civil rights laws. >>Information on filing a complaint >>This is not an enforcement agency.
  3. U.S. Department of Justice Civil Rights Division
    Employment Litigation Section enforces against state and local government employers the provisions of Title VII of the Civil Rights Act of 1964, as amended, and other federal laws prohibiting employment practices that discriminate on grounds of race, sex, religion, and national origin. >>Homepage:
  4. U.S. Department of Labor
    To foster, promote, and develop the welfare of the wage earners, job seekers, and retirees of the United States; improve working conditions; advance opportunities for profitable employment; and assure work-related benefits and rights. >>Homepage
*Note:  You will wind up being directed back to the EEOC or to the Feminist Majority Foundation.  

Helpful Links

Workplace Fairness

Department of Labor

Feminist Majority Foundation

Women's Bureau

Workplace Fairness is a non-profit organization working to preserve and promote employee rights.
While sexual harassment has been a pervasive problem for women throughout history, only in the past three decades have feminist litigators won definition of sexual harassment as a form of sex discrimination and have women come forward in droves to demand remedies and institutional change. In the United States, sexual harassment in employment, housing (harassment by a landlord or building manager), or academia is illegal.
For more than 90 years, the Women’s Bureau has been meeting its mandate by: identifying, researching and analyzing the topics working women care about most; pioneering innovative policies and programs to address them; and enhancing public education and outreach efforts to raise awareness on key issues and developments affecting women in the workforce.
Helpful list of hotlines and resources
*Note:  They will ultimately redirect you to the EEOC or to the Feminist Majority Foundation.
*Note:  Many of the links are outdated
Nearly 50 years after sex discrimination was prohibited, women continue to be paid less, face sexual harassment, and confront barriers to hiring and promotion. Many low-wage women work in jobs providing no paid leave. They are critical breadwinners and simply cannot afford to forfeit wages in order to take time off from work. Yet, they remain principal family caretakers; they become pregnant but need to work; and they have little access to back-up family care services.