| Budhpurnima Express | |
| Native Name: | वुद्घपू़र्णिमा एक्सप्रेस |
| Native Name Lang: | hi |
| Type: | Express |
| Locale: | Bihar, Uttar Pradesh |
| Operator: | North Eastern Railway |
| Start: | Rajgir |
| Stops: | 16 |
| Top Speed: | 110 km/h |
| End: | Varanasi Junction |
| Distance: | 414km (257miles) |
| Journeytime: | 8 hours, 35 minutes |
| Frequency: | Daily |
| Class: | Unreserved(Second Seating),Sleeper,3AC |
| Seating: | Yes |
| Sleeping: | Yes |
| Catering: | No |
| Baggage: | Yes |
| Train Number: | 14223UP / 14322DN |
| Speed: | 44km/h average with halts |
The Budhpurnima Express (Hindi: वुद्घपुर्णिमा एक्सप्रेस) is an express train of East central Railway zone of Indian Railways. It runs between major "Buddhist Hubs" such as Rajgir, Pawapuri, Nalanda, Patna, Gaya, Varanasi/Sarnath cities in Bihar and Uttar Pradesh. It is operated between Rajgir and Varanasi cities of India.
The trains run from Rajgir to Varanasi Junction via Nalanda, Bihar Sharif Junction,Harnaut,Bakhtiyarpur Junction, Patna Junction, Gaya Junction, Guraru, Jehanabad, Sasaram Junction,Dehri On Sone,Pt. Deen Dayal Upadhyay Junction, and Varanasi Junction.
On 30 November 2011, the parcel bogie of Budh Purnima Express caught fire at Rajgir railway station in Bihar's Nalanda district. No casualties were reported, railway officials said. The train was standing at the station when the bogie caught fire, they said, adding that firefighters were pressed into service immediately. The damaged bogie was replaced before the train left for its next journey. The cause of the fire was not known.