| 警防 | guard |
| 警防団 | civil defense unit, civil defence unit |
| 風防 | windbreak |
| 核防衛力 | nuclear defenses, nuclear defences |
| 国防論 | the question of national defense (defence) |
| 騒音防止法 | Noise Abatement Act |
| 堤防を築く | to construct an embankment |
| 伝染を防ぐ | to prevent infection |
| 防火造り | fireproof construction |
| 静電気防止 | anti-static (elec) |
| 首位攻防戦 | game or series of games between the first and second place teams |
| 消防法 | Fire Services Act, fire laws |
| 防衛費 | defense costs, defence costs, ERA |
| 防護壁 | protective wall |
| 地球温暖化防止 | prevention of global warming |
| 防潮 | protection against the tide |
| 防風林 | windbreak (forest), shelterbelt |
| ハイジャック防止法 | anti-highjack law |
| 国立予防衛生研究所 | National Institute of Health |
| 核拡散防止条約 | Treaty on the Non-Proliferation of Nuclear Weapons, Nuclear Non-Proliferation Treaty |
| 国際放射線防護委員会 | International Commission on Radiological Protection, ICRP |
| 戦域ミサイル防衛 | theater missile defense (defence), TMD |
| 大気汚染防止法 | Air Pollution Control Law |
| 地球温暖化防止会議 | Conference of Parties of the UN Framework Convention on Climate Change |
| 不正競争防止法 | Unfair Competition Prevention Law |
| 複製防止技術 | anticopying technology |
| 防衛能力 | defense capability, defence capability |
| 防弾ガラス | bulletproof glass |
| 本土ミサイル防衛 | national missile defense (US) (defence), NMD |
| 予防的治療 | prophylactic treatment |
| 防滴 | rainproof, treated against drops of water penetrating |
| 攻勢防御 | attack as a form of defense, attacking (active) defense |
| 防遏手段 | preventive measure |
| 防浸 | watertight, waterproof |
| 消防署長 | fire captain, fire marshal |
| 防止策 | prevention measure, preventive measures |
| 防衛省 | Ministry of Defense (formerly Japan Defense Agency) |
| 防衛力 | defense capability (defence) |
| 感染予防 | infection prevention, disease control |
| 事故防止 | accident prevention |
| 予防医療 | preventive medicine |
| 予防接種法 | Preventive Vaccination Law |
| 防衛機制 | defense mechanism |
| 集団的防衛 | collective defense |
| 防銹 | anti-rust |
| 防錆 | anti-rust |
| 防犯カメラ | security camera |
| 未然防止 | prevention |
| 防火訓練 | fire drill |
| 防衛策 | defense plan |