Udayan Express

{{Short description|Intercity train running from Chittagong to Sylhet in Bangladesh}}

{{Infobox rail service

| name = Udayan Express

| type = Inter-city rail

| status = Operating

| first = 16 May 1988

| operator = East Zone (Bangladesh Railway)

| daily_ridership = 8 hours 30 minutes

| start = Chittagong Railway Station

| end = Sylhet Railway Station

| stops = (723* 9 and 724* 10 stations)

| trainnumber = 723-724

| class = AC, Sovan Cair

| seating = Yes

| sleeping = Yes

| catering = Yes

| observation = Yes

| entertainment = Yes

| baggage = Yes

| gauge = Meter gauge

| speed = 80 Kilometers

| sharing = Paharika Express

}}

Udayan Express (Train No. 723/724) is an intercity train running from Chittagong to Sylhet under Bangladesh Railway. This train is currently operated by MG PT Inca coaches from Indonesia.{{Cite web |last=International2019-02-04T07:00:00+00:00 |first=Railway Gazette |title=PT Inka exports coaches to Bangladesh |url=https://www.railwaygazette.com/asia/pt-inka-exports-coaches-to-bangladesh/47978.article |access-date=2025-04-26 |website=Railway Gazette International |language=en}} It is the 2nd intercity train on the Chittagong-Sylhet route, Udayan Express. Udayan Express was inaugurated on 16 May 1988. Apart from Udayan Express, Paharika Express also runs on the Chittagong-Sylhet route.{{Cite news |title=New coaches for 'Paharika' and 'Udayan' |url=https://www.banglatribune.com/country/606129/%E2%80%98%E0%A6%AA%E0%A6%BE%E0%A6%B9%E0%A6%BE%E0%A7%9C%E0%A6%BF%E0%A6%95%E0%A6%BE%E2%80%99-%E0%A6%93-%E2%80%98%E0%A6%89%E0%A6%A6%E0%A7%9F%E0%A6%A8%E2%80%99-%E0%A6%8F-%E0%A6%A8%E0%A6%A4%E0%A7%81%E0%A6%A8-%E0%A6%95%E0%A7%8B%E0%A6%9A |work=Bangla Tribune}}{{Cite news |title=9:15 am Udayan Express train schedule cancelled |url=https://www.banglanews24.com/daily-chittagong/news/bd/820919.details |work=Banglanews24}}{{Cite news |title=14 new coaches being added to Paharika Express train |url=https://www.banglanews24.com/daily-chittagong/news/bd/769846.details |work=Banglanews24}}