Yes, you can. Many doctoral programs in the United States admit students straight from a bachelor’s degree, with no master’s required. This is the standard route in many US programs. You apply with your bachelor’s, and the PhD program itself covers the advanced coursework and research training.
Some of these programs award you a master’s degree along the way, once you finish the coursework portion. Others move you straight into doctoral research. Either way, you do not pay for and complete a separate master’s first unless you choose to.
Admission is competitive. Programs look for a strong undergraduate record, research experience, clear research interests, and strong letters of recommendation. Your statement of purpose matters more than the name on your previous degree. Some fields and some schools still prefer or require a master’s, especially outside the US, so check each program’s admission page rather than assuming one rule fits all.
Skipping the master’s can save you a year or two of tuition and let you start research sooner. The trade off is that you enter with less research experience, so you need to be ready for the workload. If you are weighing the timeline, read about how long a master’s degree takes in the USA and the right age to do a master’s. For more on degree value, see whether online master’s degrees are credible and skills you gain from a master’s degree.

