The US National Science Foundation (NSF) offers grants to students of engineering. As explained by the foundation, "This program makes grants to institutions of higher education to support scholarships for academically talented, financially needy students, enabling them to enter the workforce following completion of an associate; baccalaureate; or graduate-level degree in science and engineering disciplines." The NSF grant is available indirectly, through the student's institution, and contingent upon a student-submitted proposal.
Google offers a $10,000 grant for female computer engineering students entering their senior year of undergraduate studies or enrolled in a graduate school within the United States, under the auspices of the Anita Borg Scholarship. With the grant, Google "hopes to encourage women to excel in computing and technology and become active role models and leaders in the field." Says Google of the scholarship's namesake: "During her life, Anita's commitment to her vision and expertise in the field gained her significant recognition."
The National Science and Mathematics Access to Retain Talent Grant (bearing the acronym SMART), is a federal scholarship available to third and fourth year undergraduate students of various disciplines, including engineering. Students must be enrolled at least half-time and have a GPA of 3.0 on the 4 point scale to be eligible for the SMART Grant. The maximum available amount of the scholarship is $4,000 per academic year, though the SMART can be combined with the Pell Grant (another federal academic grant) provided students approve all criteria, and the combined allowance does not exceed the cost of attendance.
For those interested in graduate studies and defense engineering, the The National Defense and Engineering Fellowship Program offers grants via a fellowship. The program is jointly sponsored by the Army Research Office, Office of Naval Research, Air Force Office of Scientific Research and the Department of Defense High Performance Computing Modernization Program and offers large fellowship stipends for engineers interested in defense technology. Some details: "The stipends begin at $30,500 for first year fellows, $31,000 for second year fellows, and $31,500 for third year fellows. Full tuition and fees and a health insurance allowance are included as part of the program," according to the official website.