* Coatings for gas evolution reaction electrodes for efficient bubble detachment 
* Breast implants
* Contact lenses (silicone hydrogels, polyacrylamides, polymacon)
* Water sustainability: Hydrogels have emerged as promising materials platforms for solar-powered water purification, water disinfection, and Atmospheric water generator.
* Disposable diapers where they absorb urine, or in sanitary napkins
* Dressings for healing of burn or other hard-to-heal wounds. Wound gels are excellent for helping to create or maintain a moist environment.
* EEG and ECG medical electrodes using hydrogels composed of cross-linked polymers (polyethylene oxide, polyAMPS and polyvinylpyrrolidone)
* Encapsulation of quantum dots
* Environmentally sensitive hydrogels (also known as smart gels or intelligent gels). These hydrogels have the ability to sense changes of pH, temperature, or the concentration of metabolite and release their load as result of such a change. 
*Fibers
* Glue
* Granules for holding soil moisture in arid areas
* Air bubble-repellent (superaerophobicity). Can improve the performance and stability of electrodes for water electrolysis.
* Culturing cells: Hydrogel-coated wells have been used for cell culture.
* Biosensors: Hydrogels that are responsive to specific molecules, such as glucose or antigens, can be used as biosensors, as well as in DDS.
*Cell carrier: Injectable hydrogels can be used to carry drugs or cells for applications in tissue regeneration or 3D bioprinting. Hydrogels with reversible chemistry are required to allow for fluidization during injection/printing followed by self-healing of the original hydrogel structure.
*Investigate cell biomechanical functions combined with holotomography microscopy
* Provide absorption, desloughing and debriding of necrotic and fibrotic tissue
* Tissue engineering scaffolds. When used as scaffolds, hydrogels may contain human cells to repair tissue. They mimic 3D microenvironment of cells. Materials include agarose, methylcellulose, hyaluronan, elastin-like polypeptides, and other naturally derived polymers. 
* Sustained-release drug delivery systems. Ionic strength, pH and temperature can be used as a triggering factor to control the release of the drug.
* The swelling behavior exhibited by charged hydrogels can be used as a valuable tool for investigating interactions between charged polymers and various species, including multivalent ions, peptides, and proteins. This response arises due to fluctuating osmotic swelling forces resulting from the exchange of counterions within the gel matrix. Particularly significant is its application in assessing the binding of peptide drugs to biopolymers within the body, as the swelling response of the gel can provide insights into these interactions.
* Window coating/replacement: Hydrogels are under consideration for reducing infrared light absorption by 75%. Another approach reduced interior temperature using a temperature-responsive hydrogel.
* Thermodynamic electricity generation: When combined with ions allows for heat dissipation for electronic devices and batteries and converting the heat exchange to an electrical charge.
* Water gel explosives
* Controlled release of agrochemicals (pesticides and fertilizer)
* Talin Shock Absorbing Materials - protein-based hydrogels that can absorb supersonic impacts