常见的合同划分与种类合同可有下列不同的标准划分：oral/parolecontractandwrittencontract（口头合同与书面合同）consensualcontractandrealcontract（诺成合同与实践合同）formalcontractandinformalcontract（要式合同与不要式合）unilateralcontractandbilateralcontract（单务合同与双务合同）principalcontractandaccessorycontract（主合同与从合同）causativecontractandnon-causativecontract（要因合同与不要因合同）commutativecontractandindependentcontract（可替换合同与独立合同）expresscontractandimpliedcontract（明示合同与隐含合同）divisiblecontractandindivisiblecontract（可分合同与不可分合同）entirecontractandseverablecontract（不可分合同与可分合同）executedcontractandexecutorycontract（已履行的合同与待履行的合同）gratuitouscontractandonerouscontract（无偿合同与有偿合同）certaincontractandhazardouscontract（确定合同与射幸合同）simplecontractandcontractunderseal（盖印合同与非盖印合同）jointandseveralcontract（连带合同）conditionalcontract（附条件合同）constructivecontract（推定合同）investmentcontract（投资合同）openendcontract（无限制合同）quasicontract（准合同）altruisticcontract（利他合同）cost-pluscontract（用于政府采购的照本加成合同）还有:gentleman'sagreement:Generallyanunsignedandunenforceableagreementmadebetweenpartieswhoexpectitsperformancebecauseofgoodfaith.君子协定（即当事人未被签字也不会强制实施的，仅仅寄希望于双方诚意履行的协议）1999年中国《合同法》第九章到第二十三章就合同种类做了概括，它们分别是：Salescontracts（买卖合同）ContractsforSupplyofPower，Water，GasorHeat（供用电、水、气、热力合同）Giftcontracts（赠与合同）Contractsforloanofmoney（借款合同）Leasingcontracts（租赁合同）Financialleasingcontracts（融资租赁合同）Work-for-hirecontracts（承揽合同）Contactsforconstructionprojects（建筑工程合同）Carriagecontracts（运输合同）Technologycontracts（技术合同）Safe-keepingcontracts（保管合同）Warehousingcontracts（仓储合同）Agencyappointmentcontracts（委托代理合同）Tradingtrustcontracts（行纪合同）Brokeragecontracts（居间合同）就实践中常见的合同协议而言，劳动人事方面包括有：laborcontract（劳动合同）confidentialityagreement（保密协议）non-completeagreement（竞争禁止协议）humanagencyagreement（人事代理协议）contractofsaleofcommodityhouses（商品房买卖合同）tenancyagreement（租赁协议）contractforassignment，leaseandtransferoftherighttotheuseofland（土地使用权出让、出租、转让合同）mortgageagreement（抵押合同）loancontract（贷款合同）propertymanagementcontract（物业管理合同）contractforconstructionengineeringandinstallationofproject（建议工程承包、安装合同）月艮务方面有：Technicalserviceagreement,technicalconsultingagreement,technicaldevelopmentagreement,technicaltransferagreement,licensingagreement.（技术服务、咨询、开发、转让、许可协议）；Agencyagreement（代理协议）Insurancecontract（保险合同）Financingagreement（融资协议）Venturecapitalmanagementagreement（风险投资管理协议）Employmentcontractforlegalconsultant（法律顾问协议）公司方面包括有：jointventurecontract（合资企业合同）articlesofassociation，corporatebylaw（章程）partnershipagreement（合伙协议）agreementonassignmentofequityinterests（股权转让协议）compositionagreement（和解协议）物流（Logistics）方面包括有：salescontract（买卖合同）purchasecontract（采购合同）carriage/transportationcontract（运输合同）importandexportcontract（进出口合同）warehousingandsafekeepingcontract（仓储保管合同）contractforcompensationtrade（补偿贸易合同）人身（personalright）方面包括有：legacy-supportagreement（遗赠抚养协议）divorceagreement（离婚协议）。
