| Tirumalagiri | |
| Other Name: | Trimulgherry |
| Settlement Type: | Suburb |
| Pushpin Map: | India Hyderabad |
| Pushpin Map Caption: | Location in Hyderabad, India |
| Coordinates: | 17.4711°N 78.5094°W |
| Subdivision Type: | Country |
| Subdivision Name: |  India |
| Subdivision Type1: | State |
| Subdivision Name1: | Telangana |
| Subdivision Type2: | District |
| Subdivision Name2: | Hyderabad District |
| Subdivision Type3: | Metro |
| Subdivision Name3: | Hyderabad Metropolitan Development Authority |
| Established Title: | Established |
| Established Date: | 1857 |
| Governing Body: | Cantonment Board, Secunderabad |
| Unit Pref: | Metric |
| Population Density Km2: | auto |
| Demographics Type1: | Languages |
| Demographics1 Title1: | Official |
| Demographics1 Info1: | Telugu |
| Timezone1: | IST |
| Utc Offset1: | +5:30 |
| Postal Code Type: | PIN |
| Postal Code: | 500015 |
| Blank1 Name Sec1: | Lok Sabha constituency |
| Blank1 Info Sec1: | Secunderabad |
| Blank2 Name Sec1: | Vidhan Sabha constituency |
| Blank2 Info Sec1: | Cantonment |
| Blank3 Name Sec1: | Planning agency |
| Blank3 Info Sec1: | Cantonment Board, Secunderabad |
| Official Name: | Trimulgherry |
Tirumalagiri, previously spelt Trimulgherry, is a locality and a Mandal in the city of Secunderabad which falls under Secunderabad Revenue Division, and is a major suburb of Secunderabad, India. The name is an anglicization of Tirumalagiri. It is in the north of Hyderabad District. Trimulgherry used to be base for Britishers in colonial era and many britisher lived here even after the independence . Mainly many churches were built around this area for the British . Few notable ones are Holy Family Church, Wesley Garrison Church, All saints Churches . Theses churches are of old era. A milatary Hospital was built for the britishers, it now serves the indian armed forces now . Trimulgherry also has very famous Surya Bhagwan Temple, one of the few dedicated to Sun God where there is a small pond .
The suburb has many smaller residential townships. Adjacent suburbs like Karkhana and AOC centre are often considered part of Trimulgherry. In the past 15 years, this suburb has become an important residential area in the twin cities. Many colonies, townships, and apartments came up in this suburb. Trimulgherry also has football ground where numerous players represented erstwhile Andhra Pradesh . Few went on to represent India. Many of these players played for Army, South Central Railways, SBI, SBH, AG Office etc .
Closeby, a small lake known as the Hasmathpet lake supplies fresh fish to the city.
Historically, Secunderabad constituted a combination of three villages namely, Tirumalagiri, Bowenpally and Marredpally. It has some historic buildings built during the British era like an old British Jail and a Medical college. Sir Ronald Ross who discovered cure for Malaria worked not far from this place at Sir Ronald Ross Institute of Parasitology. Originally This is base for British Army, as many buildings were constructed by British eg British Jail, Milatary Hospital, You could also see surrounding this area there are lot of tamil speaking people who have settled at Trimulgherry, Lal Bazaar, Old Diary Farm, Kantha Basti, 108 Bazaar etc. These people were brought by British from tamil nadu and settled here hundreds of years back . These people used to work in British army, Military Hospital, and in the houses of Britishers as domestic servants .
There are some good Schools and Colleges in this suburb. Notable are Holy Family Girls High School (oldest school), St Josephs High School, Delhi Public School, New Ushodaya High School (Subhash Nagar), Sherwood Public School, St Andrews School,, Kendriya Vidyalaya Gowtham Model School, Army School R. K. Puram.