Marian Rogers Croak is a Vice President of Engineering at Google. She was previously the Senior Vice President of Research and Development at AT&T. Croak has been awarded over 200 patents, almost half of which are in VolP (Voice over Internet Protocol.) Many of her inventions lay the foundations for the digital networks we know and use today.

She was inducted into the Women in Technology International Hall of Fame in 2013. In 2022, Croak was inducted into the National Inventors Hall of Fame for her patent regarding VolP Technology. She is one of the first two Black women to receive that honor, along with Patricia Bath. Her invention allows users to make calls over the internet instead of a phone line. Today, the widespread use of VolP technology is vital for remote work and conferencing, as well as personal communications. The International VolP calls market is predicted to hold a significant share of all conversations by 2025. VolP had an estimated market size of $30 Billion in 2020 and is projected to grow to $95 Billion by 2027.

She received a patent in 2005 for text-based donations to charity, along with co-inventor Hossein Eslambolchi, U.S. Patent 7,715,368 Method and Apparatus for dynamically debiting a donation. This technology enables a network to identify a particular charity, provide the designating funding to the charity, and then have the network service provider bill the original donor on its monthly bill.