Municipio I is an administrative subdivision of the municipality of Rome, encompassing the centre of the city.

It was first created by Rome's city council on 19 January 2001 and has a president who is elected during the mayoral elections. On 11 March 2013 its borders were modified and it was expanded with the incorporation of part of the abolished Municipio XVII. Since then all the rioni of Rome, which are the city's historic districts, form part of Municipio I together with the localities Delle Vittorie and Eroi.

Municipio I is divided into 11 localities:

Locality	Inhabitants 31 December 2010
1a Historical Centre	39,288
1b Trastevere	21,749
1c Aventino	8,798
1d Testaccio	8,373
1e Esquilino	37,383
1f XX Settembre	10,670
1g Celio	4,524
1x Archeological Zone	1,102
17a Prati	20,538
17b Delle Vittorie	27,750
17c Eroi	21,199
Not localised	128

Since 2013 the territory includes all 22 rioni: R.I Monti, R.II Trevi, R.III Colonna, R.IV Campo Marzio, R.V Ponte, R.VI Parione, R.VII Regola, R.VIII Sant'Eustachio, R.IX Pigna, R.X Campitelli, R.XI Sant'Angelo, R.XII Ripa, R.XIII Trastevere, R.XIV Borgo, R.XV Esquilino, R.XVI Ludovisi, R.XVII Sallustiano, R.XVIII Castro Pretorio, R.XIX Celio, R.XX Testaccio, R.XXI San Saba and R.XXII Prati.

• 
  Trastevere
• 
  Prati

The president of the municipio is directly elected by citizens. The Council of the municipio is elected every five years, with a system under which voters express a direct choice for the President or an indirect choice voting for the party of the candidate's coalition. If no candidate receives at least 50% of votes, the top two candidates go to a second round after two weeks. This gives a result whereby the winning candidate may be able to claim majority support.

Last election occurred on 3 and 17 October 2021:

Candidate		Party	Votes	%	Run-off	%
	Lorenza Bonaccorsi	PD	26,188	40.06	38,417	65.92
	Lorenzo Maria Santonocito	FdI	17,893	27.37	19,857	34.08
	Giuseppe Lobefaro	A	13,726	21.00
	Federica Festa	M5S	5,198	7.95
	Others		2,359	3.61
Total			65,364	100.00	58,264	100.00

The table below shows the current composition of the council:

Term	Majority	Opposition	Total	President
2021–2026	10 PD 1 SI 4 Others	4 FdI 3 A 1 L 1 M5S	24	Lorenza Bonaccorsi (PD)

Here is a list of presidents of the municipio since the office was created in 2001:

President		Party	Coalition	In office
	Giuseppe Lobefaro	DL	Centre-left	2001–2008
	Orlando Corsetti	PD	Centre-left	2008–2013
	Sabrina Alfonsi	PD	Centre-left	2013–2021
	Lorenza Bonaccorsi	PD	Centre-left	since 2021

The area of the municipality occupies the central districts of the town, including the whole historic district enclosed by the Aurelian Walls and the Janiculum walls and crossed by the Tiber, which makes part of UNESCO's List of World Heritage Sites. The quarters built over the river in the late 19th century and the beginning of 20th century between Vatican Hill and Monte Mario (Prati, Trionfale, Della Vittoria) are also within its borders.

The ancient core of the municipality is the historic seven hills (Palatine, Aventine, Capitolium, Quirinal, Viminal, Esquiline and Caelian), as well as the Janiculum, the Pincian Hill and the artificial hillocks of Monte Testaccio and Monte Giordano. Along the Tiber rises the Tiber Island.

• Enzo Tortora (Via Zabaglia)
• Rispoli (Piazza Grazioli)
• Giordano Bruno (Via Giordano Bruno)
• Centrale Ragazzi (Via San Paolo alla Regola)
• Romana Sarti (Piazza dell'Accademia di San Luca)
• Casa della Memoria e della Storia (Via San Francesco di Sales)
• Casa delle Traduzioni (Via degli Avignonesi)
• Library of the Scuola popolare di musica di Testaccio (Piazza Orazio Giustiniani)

The municipio hosts 103 museums (70 municipal museums and 33 State museums), such as the Vittoriano, the Capitoline Museums, the Scuderie del Quirinale, the Palazzo delle Esposizioni and the Museo Alfonso Gallo

Stations of Rome Metro in the Municipio:

• Cipro, Ottaviano, Lepanto, Flaminio, Spagna, Barberini, Repubblica, Termini, Vittorio Emanuele, Manzoni, San Giovanni;
• Castro Pretorio, Termini, Cavour, Colosseo, Circo Massimo, Piramide;
• San Giovanni.

The public transport is ensured by numerous access points to the rail lines, as well as many bus, trolleybuses and trams (line 8 towards Gianicolense and lines 5 and 14 towards Via Prenestina).

In this Municipio, or at its borders, there is Roma Termini railway station (the main railway yard in the town, with regional, national and international connections, among which the Rome–Naples high-speed railway), the Roma Ostiense railway station, the central sections of the Line A and Line B of the Metro (with interchange at Roma Termini) and the terminus of the three regional railways Rome-Lido, Rome North and Rome-Giardinetti. Roma Trastevere and Roma San Pietro railway stations are also very close and easily accessible.

Roma Termini has a direct rail link with Fiumicino Airport, served by the Leonardo Express, as well as many bus lines both to Fiumicino and Ciampino Airports.

• "2016 Italian local elections 2016 – Municipio 01 (formerly 01 and 17)". Roma Capitale 2016.

41°53′35″N 12°28′58″E / 41.89306°N 12.48278°E / 41.89306; 12.48278