Guillaume Long is a French politician and member of the Socialist Party. He has served as a member of the French National Assembly, representing the Seine-Maritime department. Long is known for his work on various social and economic issues, advocating for policies that support public welfare and environmental sustainability. In addition to his political career, Guillaume Long has a background in law and political science. He has been involved in local governance and has held various positions within the French government, focusing on improving the lives of citizens through effective legislation and community engagement.