CNAE 4291-0/00 · Brazil

Obras portuárias, marítimas e fluviais

478 active companies in the Brazilian CNPJ registry have this CNAE as their main activity. Look up companies and explore their distribution by state and city.

Source: Receita Federal, CNPJ Open Data · October 2026 publication

What this list shows

We count each active company in the Brazilian CNPJ registry once, by its head office and this CNAE as its main activity. Branches and secondary activities are excluded from this scope. The total describes the registry, not market revenue or company quality.

Active companies: 478; 883rd of 1,329 activities
Opened in 12 months: 43; +34.4% · 851st by openings
Of every 100 companies in the country: 0.0; do this activity
Openings per 100 active: 9; in the country: 21

Active companies in this activity

More active establishments and higher registered capital first. This order is not a quality assessment or recommendation.

ALLONDA AMBIENTAL LTDA - EM RECUPERACAO JUDICIALBarueri (SP)
PIATEC CONSTRUCOES LTDASantos (SP)
SK INFRAESTRUTURA LTDACuritiba (PR)
AGREGA MINERADORA LTDASanta Cruz do Sul (RS)
VAN OORD SERVICOS DE OPERACOES MARITIMAS LTDARio de Janeiro (RJ)
JAN DE NUL DO BRASIL DRAGAGEM LTDA.Rio de Janeiro (RJ)
BOSKALIS DO BRASIL DRAGAGEM E SERVICOS MARITIMOS LTDA.Rio de Janeiro (RJ)
DP BARROS - PAVIMENTACAO E CONSTRUCAO LTDASão Paulo (SP)
GCR CONSTRUCOES S/ASão Paulo (SP)
SBV SOLUCOES AMBIENTAIS LTDAMaceió (AL)
SCHEIN ENGENHARIA E SERVICOS AQUAVIARIOS LTDAPorto Alegre (RS)
BELOV OBRAS PORTUARIAS LTDASimões Filho (BA)

Look up companies in this activity (up to 300)

How to assess a company's data

When you open a company's record, use these guides to check the data and understand what each field can establish.

How to look up a CNPJ
Check identifiers, dates and registry fields against official sources.
What an active CNPJ means
Active status does not show that a company is debt-free, licensed or able to operate.
How to read partner and administrator records
Understand QSA roles and the limits on ownership and representation information.

Where the companies are

Weight in each federative unit: of every 100 active companies, how many have this main activity

Federative units with the most companies

1 São Paulo 125
2 Rio de Janeiro 94
3 Paraná 27
4 Bahia 23
5 Ceará 22
6 Santa Catarina 22
7 Amazonas 21
8 Espírito Santo 20
9 Minas Gerais 20
10 Pernambuco 20

See the 25 federative units

11 Rio Grande do Sul 18
12 Pará 17
13 Mato Grosso do Sul 6
14 Amapá 5
15 Paraíba 5
16 Goiás 4
17 Distrito Federal 3
18 Maranhão 3
19 Piauí 3
20 Rio Grande do Norte 3
21 Sergipe 2
22 Tocantins 2
23 Alagoas 1
24 Mato Grosso 1
25 Rondônia 1

Cities with the most companies

active companies by head office

See the 29 cities

What activity 4291-0/00 is

Section F — Construção
Division — Obras de infra-estrutura
Group — Construção de outras obras de infra-estrutura
Class — Obras portuárias, marítimas e fluviais

What it covers

As obras marítimas e fluviais, tais como: #- construção de instalações portuárias #- construção de portos e marinas #- construção de eclusas e canais de navegação (vias navegáveis) #- enrocamentos #- obras de dragagem #- aterro hidráulico #- barragens, represas e diques, exceto para energia elétrica
A construção de emissários submarinos
A instalação de cabos submarinos

What it does not cover

A construção de instalações para embarque e desembarque de passageiros (aeroportos, rodoviárias, portos, etc.) (4120-4/00)Classified under: 4120-4/00 Construção de edifícios
As obras de drenagem (4319-3/00)Classified under: 4319-3/00 Serviços de preparação do terreno não especificados anteriormente

Typical activities

Aterro hidráulico, obras de
Atividades de desassoreamento de rios e lagos
Atividades de dragagem de rios para fins de navegabilidade
Atividades de manutenção de hidrovias
Atividades de manutenção do calado de rios
Barragens (exceto para hidrelétricas), construção de
Canais de navegação, construção de
Canais, diques, barragens (exceto para hidrelétricas), construção de
Construção de eclusas e canais de navegação, obras de
Construção de marinas, obras de
Construção de portos, marítimos e fluviais, obras de
Construção de terminal de uso privado (portuário)

See the other 16 typical activities

Diques e outras estruturas de controles de enchentes, construção de
Docas e piers, construção de
Dragagem, obras de
Emissário marítimo, construção de
Emissários submarinos, construção de
Instalação de cabos submarinos
Instalações portuárias, construção de
Manutenção de cabos submarinos de comunicação e transmissão de dados
Marinas, construção de
Obras de abertura de barras, embocaduras e canais
Obras de canalização de leitos ou perfis de rios
Obras de retificação de leitos ou perfis de rios
Obras de transposição de bacias hidrográficas
Portos e canais, construção de
Rios, portos, canais, baias, lagos, lagoas, represas, açudes e similares, limpeza de
Terminais marítimos e fluviais, construção de

Source: IBGE, CNAE 2.3 and its explanatory notes

Frequently asked questions about CNAE 4291-0/00

How many CNAE 4291-0/00 companies are there in Brazil?

478 active companies have CNAE 4291-0/00 as their main activity, according to the Receita Federal's October 2026 publication. It is 883rd among the country's activities by companies.

Which federative unit has the most companies in this activity?

São Paulo, with 125. There, 0.0 of every 100 active companies have this main activity, against 0.0 in the national registry.

Does this total include branches and secondary activities?

No. Each active company is counted once, by its head office and registered main activity. A company may carry out this activity as a secondary activity and be excluded from the count. Geographic distribution uses the registered location; records without a recognized federative unit may be counted nationally without appearing in local groups.

Does active status mean a company is qualified for a contract?

No. Active status describes the Receita Federal registration. It does not establish tax compliance, creditworthiness, licences, ability to fulfil a contract or quality. Check the relevant official documents and the contract's requirements.

How we count

Active companies in the Brazilian CNPJ registry with this as their main activity, counted once by head office. Location is taken from the registry. Where available, openings are for the last 12 months, compared with the previous 12 months.