An Angel Investor is an individual who provides financial support to early-stage startups in exchange for equity ownership or convertible debt. These investors often have a personal interest in the business and may also offer mentorship and guidance to the entrepreneurs they support. Angel investors play a crucial role in the startup ecosystem, as they help bridge the funding gap between friends and family investments and venture capital. Their contributions can significantly increase a startup's chances of success, allowing innovative ideas to flourish and grow into viable businesses.