Search for engineering competitions and you get robotics. Robotics is one branch, and a student who wants to build bridges, treat water, design a city or work on aircraft gets nothing useful from those lists.
This gives one competition per discipline, with the entry rule for students outside the host country stated in each case, because that is the part that decides whether you can take part at all.
| Discipline | Competition | Who may enter | Cost |
|---|---|---|---|
| Any branch | Regeneron ISEF | Win an affiliated fair in your country | Free |
| Mechanical and automotive | STEM Racing | 35+ countries, through a national final | Varies by country |
| Aerospace | NASA Rover Challenge | Any international school, travel to Alabama | Free to enter |
| Space systems | NSS Space Settlement Contest | Anywhere in the world, submitted online | Free to submit |
| Marine and ocean | MATE ROV Competition | Students worldwide | Varies by region |
| Civil and urban | Future City High School | Worldwide, grades 9–12 | $375 per team |
| Environmental and water | Stockholm Junior Water Prize | About 40 countries, through a national competition | Free |
| Sustainable design | Biomimicry Youth Design Challenge | Schools outside the US accepted | Free |
| Robotics and mechatronics | FIRST, VEX and WRO | Worldwide | Paid |
Every branch of engineering at once
Regeneron ISEF is the one competition that covers every discipline, because it judges engineering by category rather than lumping it together.
Seven of its 22 categories are engineering: Biomedical Engineering, Embedded Systems, Energy: Sustainable Materials and Design, Engineering Technology: Statics and Dynamics, Environmental Engineering, Materials Science, and Robotics and Intelligent Machines.
You compete against other projects in your own category, so a water filtration project is not judged against a machine learning model.
Entry is through a Society-affiliated fair in your own country rather than an application to ISEF. The rules require you to "be in grades 9–12 or equivalent" and to "not have reached age 20 on or before May 1 preceding ISEF". Team projects "must have no more than three members", each student may enter one project only, and that project "may include no more than 12 months of continuous research".
ISEF also offers a route for projects in chemical, electrical and biomedical engineering through its engineering categories.
Jayveer Kochhar went from Mumbai to Stanford. He built a low-cost breathing device, filed a patent, started a company, published papers and took it to ISEF twice. He also qualified for JEE Advanced and could not sit it because he was at ISEF in the United States at the time.
Mechanical and automotive engineering
STEM Racing, which ran as F1 in Schools until recently, is the largest school engineering competition in the world that is not robotics.
Teams design and manufacture "a 1:25 scale Formula 1 car, with races lasting little more than a second and victories often decided by just milliseconds". That covers computer-aided design, computational fluid dynamics, manufacturing tolerance and materials, which is mechanical engineering in miniature.
It is open to students aged 13 to 19 and runs through national finals in more than 35 countries. The 2026 World Finals were held from 3 to 8 October at Resorts World Sentosa in Singapore, alongside the Formula 1 Singapore Grand Prix, with more than 830 participants expected and 11 Formula 1 teams supporting it.
You enter through your country's national organiser, and costs vary because teams fund their own manufacturing and travel. This is the entry on the list most likely to need a sponsor.
Aerospace engineering
The NASA Human Exploration Rover Challenge asks student teams to design and build "human-powered or remote-controlled rovers capable of traversing challenging lunar terrain while completing mission tasks".
NASA states the eligibility plainly. It is open to "Any U.S. college, university, middle school, or high school" and "Any international college, university, middle school, or high school", across grades 6 to 12 and higher education.
The 2027 event runs from 21 to 24 April 2027 at the U.S. Space & Rocket Center in Huntsville, Alabama, with proposals due the previous September.
Two things to weigh. You build a physical rover and bring it to Alabama, so this needs funding and a visa. And NASA's policy limits participation connected to an affiliation with China, Hong Kong or Macau, which applies across its student programmes.
Space systems engineering
The NSS Gerard K. O'Neill Space Settlement Contest is the opposite of the rover challenge. You build nothing physical, you post nothing, and you need no money.
It has run annually since 1994 and asks students to design a permanent settlement in free space rather than on a planet or moon. The National Space Society says "Students can participate from anywhere in the world, and we receive a large amount of international submissions."
The engineering is the point. O'Neill's original question covered "in-space manufacturing, raw materials, energy production and storage, food supply and agriculture, radiation protection, artificial gravity, day-night cycles", so almost any discipline has somewhere to contribute.
Entries are judged in grade bands up to 12th grade and in three sizes: individual, small group of two to five, and large group of six to twelve. The deadline is 15 February, submissions are electronic, and entries are capped at 50 pages.
The top entry overall takes the grand prize, and the highest ranking entry whose students attend the society's conference receives the $5,000 Herman Rubin Memorial Scholarship and gives a talk there. Artistic Merit and Literary Merit each carry a $500 scholarship.
One rule to read carefully. Work generated by AI "must be explicitly identified and cited", and for Literary Merit entries AI text is "STRICTLY PROHIBITED".
Marine and ocean engineering
The MATE ROV Competition is the one serious international competition in underwater engineering, and it is open from primary school upward.
It "challenges K-12, community college, and university students from all over the world to tackle missions based on scenarios from the workplace". Teams "design and build a remotely operated vehicle and the necessary sensors, tooling, and complementary technologies to monitor the health of the aquatic habitats of our Blue Planet".
Teams compete in regional events first, and the 2025 World Championship was held in Alpena, Michigan. Costs depend on your regional organiser and on what you build.
MATE is explicit that adults stay out of it. Mentors "are expected to limit their input to educational and inspiration roles", which matters when judges are deciding whether a sixteen year old built the thing.
Civil and urban engineering
Future City High School focuses on civil and urban engineering. Teams design a sustainable city of the future and explain how it solves an annual engineering challenge.
It is open to U.S. and international teams in grades 9–12, with three to five students and one adult coach. The high school division accepts teams directly rather than through the middle school regional competition.
Teams submit an essay and a digital city model built in Revit for a virtual qualification round. Competition Access costs $375 per team. Selected finalists present in Washington, DC, and pay their own travel and hotel costs.
Environmental and water engineering
The Stockholm Junior Water Prize has run since 1997, draws "tens of thousands of participants from around 40 countries worldwide", and is presented by the Crown Princess of Sweden during World Water Week.
It is for students aged 15 to 20 in secondary school. You enter through a national competition run by an organiser in your own country, and the winner of that national round goes to Stockholm. No more than two students may represent a project there.
Projects must use "scientifically accepted methodologies for investigation, experimentation, monitoring and reporting", and cover water quality, water resources management, protection, treatment, or the social side of water. The international winner receives $15,000 for the project and $5,000 for their school.
The 2026 results show the range. The prize went to Moroti Adegboyega of Canada for a platform using AI and magnets to pull plastic from water. The People's Choice Award went to Basmala Diab of Egypt, for turning agricultural waste into a tool for cleaner water and energy.
Sustainable and biomimetic design
The Biomimicry Youth Design Challenge asks teams to solve a design problem by copying a mechanism that already works in nature, which is how a lot of materials and structural engineering starts.
It is free, it is open to grades 6 to 12, and the organisers answer the eligibility question directly: "Yes, we accept entries from schools outside the US."
Teams are two to eight students with at least one adult coach aged 18 or over, and the team must be attached to a school, a registered homeschool, or a legally recognised organisation such as a museum or an after school programme. Registration closes at the end of January and submissions are due in the first days of June.
Of everything here, this has the lowest barrier. No fee, no national selection, no travel, and no equipment beyond what a classroom already has.
Robotics and mechatronics
Robotics is covered well elsewhere, including in our own guide to robotics competitions for international students. The short version is FIRST Robotics, VEX and the World Robot Olympiad, all open worldwide and all expensive.
Jayveer's school in Mumbai became the first Indian team to win a regional at the FIRST Robotics Competition, which gives a sense of what the ceiling looks like.
Asadbek Ruziev went from Uzbekistan to Arizona State to study robotics engineering with his full cost covered. He was a prize winner in around twenty STEM and robotics competitions at national and international level before he applied.
What a result does for an engineering application
An engineering project is evidence you can finish something, which is harder to show than knowing physics.
Junkyu Kang went from Seoul to Oxford to read mechanical engineering. His research on migrational wind turbines took gold at the Korean Science and Engineering Fair and bronze at an international olympiad, and he took silver at the Samsung HumanTech Paper Award. Several of his projects were later published.
Jayveer makes the other half of the point. He did not write about ISEF, the patent or the startup in his Stanford essays. The admissions officer could already see all of that on the activity list. The essays were for what the list could not show.
How to choose one
If your country has an affiliated science fair, enter it: ISEF lets you compete against projects in the category that matches your work.
If you have no money and no equipment, the space settlement contest and the biomimicry challenge are both free, both judged on a document, and both open from anywhere.
If your school already has a workshop, STEM Racing and the rover challenge reward manufacturing, and both need a sponsor.
If you want to study civil or urban engineering, Future City High School accepts international teams and starts with a virtual qualification round.
Pick the one that matches the branch you want to study. An admissions reader for a civil engineering course is not impressed by a robot, and the opposite is just as true.
Kai, the Borderless AI college counselor, can find the affiliated science fair and the national organisers that operate where you live. It's free to use.
Start with Kai, and read the stories from students who built something and got in.
